diff --git a/src/modules/evas/engines/gl_common/evas_gl_api.c b/src/modules/evas/engines/gl_common/evas_gl_api.c
index 6b93548524..0871467cbe 100644
--- a/src/modules/evas/engines/gl_common/evas_gl_api.c
+++ b/src/modules/evas/engines/gl_common/evas_gl_api.c
@@ -2120,15 +2120,18 @@ do_eglShaderPatch(const char *source, int length, int *patched_len)
           {
              if (!strncmp(p, "gl_MaxVertexUniformVectors", 26))
                {
-                  p = "(gl_MaxVertexUniformComponents / 4)";
+                  free(p);
+                  p = strdup("(gl_MaxVertexUniformComponents / 4)");
                }
              else if (!strncmp(p, "gl_MaxFragmentUniformVectors", 28))
                {
-                  p = "(gl_MaxFragmentUniformComponents / 4)";
+                  free(p);
+                  p = strdup("(gl_MaxFragmentUniformComponents / 4)");
                }
              else if (!strncmp(p, "gl_MaxVaryingVectors", 20))
                {
-                  p = "(gl_MaxVaryingFloats / 4)";
+                  free(p);
+                  p = strdup("(gl_MaxVaryingFloats / 4)");
                }
 
              int new_len = strlen(p);
diff --git a/src/modules/evas/engines/software_generic/evas_engine.c b/src/modules/evas/engines/software_generic/evas_engine.c
index 60c639a085..3fb420a395 100644
--- a/src/modules/evas/engines/software_generic/evas_engine.c
+++ b/src/modules/evas/engines/software_generic/evas_engine.c
@@ -3330,15 +3330,18 @@ patch_gles_shader(const char *source, int length, int *patched_len)
           {
              if (!strncmp(p, "gl_MaxVertexUniformVectors", 26)) 
                {
-                  p = "(gl_MaxVertexUniformComponents / 4)";
+                  free(p); 
+                  p = strdup("(gl_MaxVertexUniformComponents / 4)");
                } 
              else if (!strncmp(p, "gl_MaxFragmentUniformVectors", 28)) 
                {
-                  p = "(gl_MaxFragmentUniformComponents / 4)";
+                  free(p);
+                  p = strdup("(gl_MaxFragmentUniformComponents / 4)");
                } 
              else if (!strncmp(p, "gl_MaxVaryingVectors", 20)) 
                {
-                  p = "(gl_MaxVaryingFloats / 4)";
+                  free(p);
+                  p = strdup("(gl_MaxVaryingFloats / 4)");
                }
 
              int new_len = strlen(p);