diff --git a/content/xslt/src/xslt/txGenerateIdFunctionCall.cpp b/content/xslt/src/xslt/txGenerateIdFunctionCall.cpp
index 8482458f2850..4b8b5545a589 100644
--- a/content/xslt/src/xslt/txGenerateIdFunctionCall.cpp
+++ b/content/xslt/src/xslt/txGenerateIdFunctionCall.cpp
@@ -35,9 +35,9 @@
 */
 
 #ifndef HAVE_64BIT_OS
-char* GenerateIdFunctionCall::printfFmt = "id0x%08p";
+const char GenerateIdFunctionCall::printfFmt[] = "id0x%08p";
 #else
-char* GenerateIdFunctionCall::printfFmt = "id0x%016p";
+const char GenerateIdFunctionCall::printfFmt[] = "id0x%016p";
 #endif
 
 /**
diff --git a/content/xslt/src/xslt/txXSLTFunctions.h b/content/xslt/src/xslt/txXSLTFunctions.h
index 472a62e9c9ce..a87a63688cd6 100644
--- a/content/xslt/src/xslt/txXSLTFunctions.h
+++ b/content/xslt/src/xslt/txXSLTFunctions.h
@@ -316,7 +316,7 @@ public:
     virtual ExprResult* evaluate(Node* context, ContextState* cs);
 
 private:
-    static char* printfFmt;
+    static const char printfFmt[];
 };
 
 /**