diff --git a/lib/ctu.cpp b/lib/ctu.cpp
index 74488b507..73840cb7f 100644
--- a/lib/ctu.cpp
+++ b/lib/ctu.cpp
@@ -360,30 +360,6 @@ static bool findPath(const CTU::FileInfo::FunctionCall &from,
     return false;
 }
 
-static std::string replacestr(std::string s, const std::string &from, const std::string &to)
-{
-    std::string::size_type pos1 = 0;
-    while (pos1 < s.size()) {
-        pos1 = s.find(from, pos1);
-        if (pos1 == std::string::npos)
-            return s;
-        if (pos1 > 0 && (s[pos1-1] == '_' || std::isalnum(s[pos1-1]))) {
-            pos1++;
-            continue;
-        }
-        const std::string::size_type pos2 = pos1 + from.size();
-        if (pos2 >= s.size())
-            return s.substr(0,pos1) + to;
-        if (s[pos2] == '_' || std::isalnum(s[pos2])) {
-            pos1++;
-            continue;
-        }
-        s = s.substr(0,pos1) + to + s.substr(pos2);
-        pos1 += to.size();
-    }
-    return s;
-}
-
 std::list<ErrorLogger::ErrorMessage::FileLocation> CTU::FileInfo::getErrorPath(InvalidValueType invalidValue,
         const CTU::FileInfo::UnsafeUsage &unsafeUsage,
         const std::map<std::string, std::list<CTU::FileInfo::NestedCall>> &nestedCallsMap,
@@ -423,7 +399,7 @@ std::list<ErrorLogger::ErrorMessage::FileLocation> CTU::FileInfo::getErrorPath(I
         ErrorLogger::ErrorMessage::FileLocation fileLoc2;
         fileLoc2.setfile(unsafeUsage.location.fileName);
         fileLoc2.line = unsafeUsage.location.linenr;
-        fileLoc2.setinfo(replacestr(info, "ARG", unsafeUsage.argumentName));
+        fileLoc2.setinfo(replaceStr(info, "ARG", unsafeUsage.argumentName));
 
         locationList.push_back(fileLoc1);
         locationList.push_back(fileLoc2);
diff --git a/lib/errorlogger.cpp b/lib/errorlogger.cpp
index 424341750..5058c56c2 100644
--- a/lib/errorlogger.cpp
+++ b/lib/errorlogger.cpp
@@ -178,16 +178,6 @@ ErrorLogger::ErrorMessage::ErrorMessage(const tinyxml2::XMLElement * const errms
     }
 }
 
-static std::string replaceStr(std::string s, const std::string &from, const std::string &to)
-{
-    std::string::size_type pos = 0;
-    while (std::string::npos != (pos = s.find(from,pos))) {
-        s = s.substr(0, pos) + to + s.substr(pos + from.size());
-        pos += to.size();
-    }
-    return s;
-}
-
 void ErrorLogger::ErrorMessage::setmsg(const std::string &msg)
 {
     // If a message ends to a '\n' and contains only a one '\n'
@@ -760,3 +750,27 @@ std::string ErrorLogger::plistData(const ErrorLogger::ErrorMessage &msg)
     return plist.str();
 }
 
+
+std::string replaceStr(std::string s, const std::string &from, const std::string &to)
+{
+    std::string::size_type pos1 = 0;
+    while (pos1 < s.size()) {
+        pos1 = s.find(from, pos1);
+        if (pos1 == std::string::npos)
+            return s;
+        if (pos1 > 0 && (s[pos1-1] == '_' || std::isalnum(s[pos1-1]))) {
+            pos1++;
+            continue;
+        }
+        const std::string::size_type pos2 = pos1 + from.size();
+        if (pos2 >= s.size())
+            return s.substr(0,pos1) + to;
+        if (s[pos2] == '_' || std::isalnum(s[pos2])) {
+            pos1++;
+            continue;
+        }
+        s = s.substr(0,pos1) + to + s.substr(pos2);
+        pos1 += to.size();
+    }
+    return s;
+}
diff --git a/lib/errorlogger.h b/lib/errorlogger.h
index 61554b8d1..cedda5ad7 100644
--- a/lib/errorlogger.h
+++ b/lib/errorlogger.h
@@ -391,6 +391,9 @@ public:
     }
 };
 
+/** Replace substring. Example replaceStr("1,NR,3", "NR", "2") => "1,2,3" */
+std::string replaceStr(std::string s, const std::string &from, const std::string &to);
+
 /// @}
 //---------------------------------------------------------------------------
 #endif // errorloggerH