diff --git a/src/tools/spec/createlut.c b/src/tools/spec/createlut.c
index 997a7bea..3e832dee 100644
--- a/src/tools/spec/createlut.c
+++ b/src/tools/spec/createlut.c
@@ -737,6 +737,8 @@ int main(int argc, char **argv)
     // if(pfm) fclose(pfm);
   }
   free(out);
+  free(lsbuf);
+  free(max_b);
   // threads_global_cleanup();
   printf("\n");
 }