diff --git a/lib/checkother.cpp b/lib/checkother.cpp
index 15a8d89ec6a..2999e546043 100644
--- a/lib/checkother.cpp
+++ b/lib/checkother.cpp
@@ -991,7 +991,7 @@ void CheckOther::checkVariableScope()
     }
 }
 
-bool CheckOther::checkInnerScope(const Token *tok, const Variable* var, bool& used)
+bool CheckOther::checkInnerScope(const Token *tok, const Variable* var, bool& used) const
 {
     const Scope* scope = tok->next()->scope();
     bool loopVariable = scope->isLoopScope();
diff --git a/lib/checkother.h b/lib/checkother.h
index efae5459d2d..747f1e63857 100644
--- a/lib/checkother.h
+++ b/lib/checkother.h
@@ -123,7 +123,7 @@ class CPPCHECKLIB CheckOther : public Check {
 
     /** @brief %Check scope of variables */
     void checkVariableScope();
-    bool checkInnerScope(const Token *tok, const Variable* var, bool& used);
+    bool checkInnerScope(const Token *tok, const Variable* var, bool& used) const;
 
     /** @brief %Check for comma separated statements in return */
     void checkCommaSeparatedReturn();