diff --git a/lib/checkleakautovar.cpp b/lib/checkleakautovar.cpp
index b2c9d08725b..b40e0a97cfd 100644
--- a/lib/checkleakautovar.cpp
+++ b/lib/checkleakautovar.cpp
@@ -281,7 +281,7 @@ static const Token * isFunctionCall(const Token * nameToken)
             nameToken = nameToken->link()->next();
         }
         // check for '('
-        if (nameToken && nameToken->link() && nameToken->str() == "(") {
+        if (nameToken && nameToken->link() && !nameToken->isCast() && nameToken->str() == "(") {
             // returning opening parenthesis pointer
             return nameToken;
         }
diff --git a/test/testleakautovar.cpp b/test/testleakautovar.cpp
index 878253536e6..ea012176990 100644
--- a/test/testleakautovar.cpp
+++ b/test/testleakautovar.cpp
@@ -128,6 +128,7 @@ class TestLeakAutoVar : public TestFixture {
         TEST_CASE(doublefree12); // #10502
         TEST_CASE(doublefree13); // #11008
         TEST_CASE(doublefree14); // #9708
+        TEST_CASE(doublefree15);
 
         // exit
         TEST_CASE(exit1);
@@ -1528,6 +1529,13 @@ class TestLeakAutoVar : public TestFixture {
         ASSERT_EQUALS("", errout.str());
     }
 
+    void doublefree15() { // #11966
+        check("void f(FILE* fp) {\n"
+              "    static_cast<void>(fclose(fp));\n"
+              "}", true);
+        ASSERT_EQUALS("", errout.str());
+    }
+
     void exit1() {
         check("void f() {\n"
               "    char *p = malloc(10);\n"