diff --git a/test/helpers.cpp b/test/helpers.cpp
index e0b5fdbdf6d..a639d27ec42 100644
--- a/test/helpers.cpp
+++ b/test/helpers.cpp
@@ -146,25 +146,10 @@ std::string PreprocessorHelper::getcode(Preprocessor &preprocessor, const std::s
 
 void PreprocessorHelper::preprocess(const char code[], std::vector<std::string> &files, Tokenizer& tokenizer)
 {
-    // Raw Tokens..
-    std::istringstream istr(code);
-    const simplecpp::TokenList tokens1(istr, files, files[0]);
-
-    // Preprocess..
-    simplecpp::TokenList tokens2(files);
-    std::map<std::string, simplecpp::TokenList*> filedata;
-    simplecpp::preprocess(tokens2, tokens1, files, filedata, simplecpp::DUI());
-
-    // Tokenizer..
-    tokenizer.list.createTokens(std::move(tokens2));
-}
-
-void PreprocessorHelper::preprocess(Preprocessor &preprocessor, const char code[], std::vector<std::string> &files, Tokenizer& tokenizer)
-{
-    preprocess(preprocessor, code, files, tokenizer, simplecpp::DUI());
+    preprocess(code, files, tokenizer, simplecpp::DUI());
 }
 
-void PreprocessorHelper::preprocess(Preprocessor &preprocessor, const char code[], std::vector<std::string> &files, Tokenizer& tokenizer, const simplecpp::DUI& dui)
+void PreprocessorHelper::preprocess(const char code[], std::vector<std::string> &files, Tokenizer& tokenizer, const simplecpp::DUI& dui)
 {
     std::istringstream istr(code);
     const simplecpp::TokenList tokens1(istr, files, files[0]);
@@ -177,6 +162,7 @@ void PreprocessorHelper::preprocess(Preprocessor &preprocessor, const char code[
     // Tokenizer..
     tokenizer.list.createTokens(std::move(tokens2));
 
+    const Preprocessor preprocessor(tokenizer.getSettings());
     std::list<Directive> directives = preprocessor.createDirectives(tokens1);
     tokenizer.setDirectives(std::move(directives));
 }
diff --git a/test/helpers.h b/test/helpers.h
index 130748f4fc0..fbc8b755ec1 100644
--- a/test/helpers.h
+++ b/test/helpers.h
@@ -151,8 +151,7 @@ class PreprocessorHelper
     static std::string getcode(Preprocessor &preprocessor, const std::string &filedata, const std::string &cfg, const std::string &filename, SuppressionList *inlineSuppression = nullptr);
 
     static void preprocess(const char code[], std::vector<std::string> &files, Tokenizer& tokenizer);
-    static void preprocess(Preprocessor &preprocessor, const char code[], std::vector<std::string> &files, Tokenizer& tokenizer);
-    static void preprocess(Preprocessor &preprocessor, const char code[], std::vector<std::string> &files, Tokenizer& tokenizer, const simplecpp::DUI& dui);
+    static void preprocess(const char code[], std::vector<std::string> &files, Tokenizer& tokenizer, const simplecpp::DUI& dui);
 };
 
 namespace cppcheck {
diff --git a/test/testcondition.cpp b/test/testcondition.cpp
index d1b42b18cc6..05266e8db93 100644
--- a/test/testcondition.cpp
+++ b/test/testcondition.cpp
@@ -21,7 +21,6 @@
 #include "fixture.h"
 #include "helpers.h"
 #include "platform.h"
-#include "preprocessor.h"
 #include "settings.h"
 #include "tokenize.h"
 
@@ -127,10 +126,9 @@ class TestCondition : public TestFixture {
 
 #define check(...) check_(__FILE__, __LINE__, __VA_ARGS__)
     void check_(const char* file, int line, const char code[], const Settings &settings, const char* filename = "test.cpp") {
-        Preprocessor preprocessor(settings);
         std::vector<std::string> files(1, filename);
         Tokenizer tokenizer(settings, this);
-        PreprocessorHelper::preprocess(preprocessor, code, files, tokenizer);
+        PreprocessorHelper::preprocess(code, files, tokenizer);
 
         // Tokenizer..
         ASSERT_LOC(tokenizer.simplifyTokens1(""), file, line);
diff --git a/test/testother.cpp b/test/testother.cpp
index 6171845505e..2caae6262d3 100644
--- a/test/testother.cpp
+++ b/test/testother.cpp
@@ -21,7 +21,6 @@
 #include "fixture.h"
 #include "helpers.h"
 #include "platform.h"
-#include "preprocessor.h"
 #include "settings.h"
 #include "standards.h"
 #include "tokenize.h"
@@ -331,10 +330,9 @@ class TestOther : public TestFixture {
         settings->standards.cpp = Standards::CPPLatest;
         settings->certainty.enable(Certainty::inconclusive);
 
-        Preprocessor preprocessor(*settings);
         std::vector<std::string> files(1, filename);
         Tokenizer tokenizer(*settings, this);
-        PreprocessorHelper::preprocess(preprocessor, code, files, tokenizer);
+        PreprocessorHelper::preprocess(code, files, tokenizer);
 
         // Tokenizer..
         ASSERT_LOC(tokenizer.simplifyTokens1(""), file, line);
diff --git a/test/testtokenize.cpp b/test/testtokenize.cpp
index eab7901084b..a79e168e049 100644
--- a/test/testtokenize.cpp
+++ b/test/testtokenize.cpp
@@ -7674,10 +7674,9 @@ class TestTokenizer : public TestFixture {
     std::string checkHdrs_(const char* file, int line, const char code[], bool checkHeadersFlag) {
         const Settings settings = settingsBuilder().checkHeaders(checkHeadersFlag).build();
 
-        Preprocessor preprocessor(settings0);
         std::vector<std::string> files(1, "test.cpp");
         Tokenizer tokenizer(settings, this);
-        PreprocessorHelper::preprocess(preprocessor, code, files, tokenizer);
+        PreprocessorHelper::preprocess(code, files, tokenizer);
 
         // Tokenizer..
         ASSERT_LOC(tokenizer.simplifyTokens1(""), file, line);
diff --git a/test/testtype.cpp b/test/testtype.cpp
index d96ad4661fc..34ba2f55268 100644
--- a/test/testtype.cpp
+++ b/test/testtype.cpp
@@ -21,7 +21,6 @@
 #include "fixture.h"
 #include "helpers.h"
 #include "platform.h"
-#include "preprocessor.h"
 #include "settings.h"
 #include "standards.h"
 #include "tokenize.h"
@@ -65,10 +64,9 @@ class TestType : public TestFixture {
     void checkP_(const char* file, int line, const char code[], const Settings& settings, const char filename[] = "test.cpp", const simplecpp::DUI& dui = simplecpp::DUI()) {
         const Settings settings1 = settingsBuilder(settings).severity(Severity::warning).severity(Severity::portability).build();
 
-        Preprocessor preprocessor(settings1);
         std::vector<std::string> files(1, filename);
         Tokenizer tokenizer(settings1, this);
-        PreprocessorHelper::preprocess(preprocessor, code, files, tokenizer, dui);
+        PreprocessorHelper::preprocess(code, files, tokenizer, dui);
 
         // Tokenizer..
         ASSERT_LOC(tokenizer.simplifyTokens1(""), file, line);
diff --git a/test/testunusedvar.cpp b/test/testunusedvar.cpp
index 8ae6de2019b..d390ed628a3 100644
--- a/test/testunusedvar.cpp
+++ b/test/testunusedvar.cpp
@@ -276,9 +276,8 @@ class TestUnusedVar : public TestFixture {
 #define checkStructMemberUsageP(...) checkStructMemberUsageP_(__FILE__, __LINE__, __VA_ARGS__)
     void checkStructMemberUsageP_(const char* file, int line, const char code[]) {
         std::vector<std::string> files(1, "test.cpp");
-        Preprocessor preprocessor(settings);
         Tokenizer tokenizer(settings, this);
-        PreprocessorHelper::preprocess(preprocessor, code, files, tokenizer);
+        PreprocessorHelper::preprocess(code, files, tokenizer);
 
         // Tokenizer..
         ASSERT_LOC(tokenizer.simplifyTokens1(""), file, line);
@@ -290,10 +289,9 @@ class TestUnusedVar : public TestFixture {
 
 #define checkFunctionVariableUsageP(...) checkFunctionVariableUsageP_(__FILE__, __LINE__, __VA_ARGS__)
     void checkFunctionVariableUsageP_(const char* file, int line, const char code[], const char* filename = "test.cpp") {
-        Preprocessor preprocessor(settings);
         std::vector<std::string> files(1, filename);
         Tokenizer tokenizer(settings, this);
-        PreprocessorHelper::preprocess(preprocessor, code, files, tokenizer);
+        PreprocessorHelper::preprocess(code, files, tokenizer);
 
         // Tokenizer..
         ASSERT_LOC(tokenizer.simplifyTokens1(""), file, line);