diff --git a/src/clew.c b/src/clew.c
index dbdddfc..d088dd0 100644
--- a/src/clew.c
+++ b/src/clew.c
@@ -317,7 +317,7 @@ int clewInit()
 
 const char* clewErrorString(cl_int error)
 {
-    static const char* strings[] =
+    static const char* const strings[] =
     {
         // Error Codes
           "CL_SUCCESS"                                  //   0