diff --git a/src/script/context.cpp b/src/script/context.cpp
index a8c39b8e..c73813fc 100644
--- a/src/script/context.cpp
+++ b/src/script/context.cpp
@@ -394,7 +394,7 @@ public:
   }
 
   ScriptValueP eval(Context& ctx, bool openScope) const override {
-    #if USE_SCRIPT_PROFILING
+    #if USE_SCRIPT_PROFILING && 0 // this is very slow
       Timer timer;
       {
         // execute a
diff --git a/src/script/profiler.hpp b/src/script/profiler.hpp
index c1eb9259..cbe4ae54 100644
--- a/src/script/profiler.hpp
+++ b/src/script/profiler.hpp
@@ -12,7 +12,7 @@
 #include <script/script.hpp>
 #include <script/context.hpp>
 
-#ifndef USE_SCRIPT_PROFILING
+#if !defined(USE_SCRIPT_PROFILING) && defined(_DEBUG)
 #define USE_SCRIPT_PROFILING 1
 #endif