diff --git a/src/glu/mini/mipmap.c b/src/glu/mini/mipmap.c
index a655d214e3a..1cf739a13e3 100644
--- a/src/glu/mini/mipmap.c
+++ b/src/glu/mini/mipmap.c
@@ -287,7 +287,11 @@ gluScaleImage(GLenum format,
       }
       break;
    default:
-      return GLU_INVALID_ENUM;
+      {
+         free(tempin);
+         free(tempout);
+         return GLU_INVALID_ENUM;
+      }
    }