diff --git a/lib/checkmemoryleak.cpp b/lib/checkmemoryleak.cpp
index 6499691ad..af0ce3bb4 100644
--- a/lib/checkmemoryleak.cpp
+++ b/lib/checkmemoryleak.cpp
@@ -209,7 +209,7 @@ CheckMemoryLeak::AllocType CheckMemoryLeak::getAllocationType(const Token *tok2,
 }
 
 
-CheckMemoryLeak::AllocType CheckMemoryLeak::getReallocationType(const Token *tok2, unsigned int varid) const
+CheckMemoryLeak::AllocType CheckMemoryLeak::getReallocationType(const Token *tok2, unsigned int varid)
 {
     // What we may have...
     //     * var = (char *)realloc(..;
diff --git a/lib/checkmemoryleak.h b/lib/checkmemoryleak.h
index 525ff2400..dfcfaeaed 100644
--- a/lib/checkmemoryleak.h
+++ b/lib/checkmemoryleak.h
@@ -121,7 +121,7 @@ public:
     /**
      * @brief Get type of reallocation at given position
      */
-    AllocType getReallocationType(const Token *tok2, unsigned int varid) const;
+    static AllocType getReallocationType(const Token *tok2, unsigned int varid);
 
     /**
      * @brief Is a typename the name of a class?
diff --git a/lib/checknullpointer.h b/lib/checknullpointer.h
index ae71a882d..2ecb7454d 100644
--- a/lib/checknullpointer.h
+++ b/lib/checknullpointer.h
@@ -157,7 +157,7 @@ private:
     /**
      * @brief Removes any variable that may be assigned from pointerArgs.
      */
-    void removeAssignedVarFromSet(const Token* tok, std::set<unsigned int>& pointerArgs);
+    static void removeAssignedVarFromSet(const Token* tok, std::set<unsigned int>& pointerArgs);
 
     /**
      * @brief Investigate if function call can make pointer null. If
diff --git a/lib/checkuninitvar.cpp b/lib/checkuninitvar.cpp
index a5f64c3f2..dc6e2d34b 100644
--- a/lib/checkuninitvar.cpp
+++ b/lib/checkuninitvar.cpp
@@ -363,7 +363,7 @@ private:
      * @param tok2 start token of rhs
      * @param checks the execution paths
      */
-    void parserhs(const Token *tok2, std::list<ExecutionPath *> &checks) const {
+    static void parserhs(const Token *tok2, std::list<ExecutionPath *> &checks) {
         // check variable usages in rhs/index
         while (NULL != (tok2 = tok2->next())) {
             if (Token::Match(tok2, "[;)=]"))
@@ -1690,7 +1690,7 @@ bool CheckUninitVar::isVariableUsage(const Token *vartok, bool pointer, bool cpp
     return false;
 }
 
-bool CheckUninitVar::isMemberVariableAssignment(const Token *tok, const std::string &membervar) const
+bool CheckUninitVar::isMemberVariableAssignment(const Token *tok, const std::string &membervar)
 {
     if (Token::Match(tok, "%var% . %var%") && tok->strAt(2) == membervar) {
         if (Token::Match(tok->tokAt(3), "[=.[]"))
diff --git a/lib/checkuninitvar.h b/lib/checkuninitvar.h
index 03899b9a6..9cdb5fa83 100644
--- a/lib/checkuninitvar.h
+++ b/lib/checkuninitvar.h
@@ -62,7 +62,7 @@ public:
     bool checkLoopBody(const Token *tok, const Variable& var, const std::string &membervar, const bool suppressErrors);
     void checkRhs(const Token *tok, const Variable &var, const std::string &membervar);
     static bool isVariableUsage(const Token *vartok, bool ispointer, bool cpp);
-    bool isMemberVariableAssignment(const Token *tok, const std::string &membervar) const;
+    static bool isMemberVariableAssignment(const Token *tok, const std::string &membervar);
     bool isMemberVariableUsage(const Token *tok, bool isPointer, const std::string &membervar) const;
 
     /**
diff --git a/lib/checkunusedfunctions.h b/lib/checkunusedfunctions.h
index 2c087abd8..1f10c1e08 100644
--- a/lib/checkunusedfunctions.h
+++ b/lib/checkunusedfunctions.h
@@ -58,9 +58,9 @@ private:
     /**
      * Dummy implementation, just to provide error for --errorlist
      */
-    void unusedFunctionError(ErrorLogger * const errorLogger,
-                             const std::string &filename, unsigned int lineNumber,
-                             const std::string &funcname);
+    static void unusedFunctionError(ErrorLogger * const errorLogger,
+                                    const std::string &filename, unsigned int lineNumber,
+                                    const std::string &funcname);
 
     /**
      * Dummy implementation, just to provide error for --errorlist
diff --git a/lib/library.h b/lib/library.h
index 68ed7ab68..09c7a814c 100644
--- a/lib/library.h
+++ b/lib/library.h
@@ -133,7 +133,7 @@ private:
         return NULL;
     }
 
-    int getid(const std::map<std::string,int> &data, const std::string &name) const {
+    static int getid(const std::map<std::string,int> &data, const std::string &name) {
         const std::map<std::string,int>::const_iterator it = data.find(name);
         return (it == data.end()) ? 0 : it->second;
     }