diff --git a/pkgs/development/interpreters/php_configurable/default.nix b/pkgs/development/interpreters/php_configurable/default.nix
index e16f2829f8ac..dc9aa0ddeddf 100644
--- a/pkgs/development/interpreters/php_configurable/default.nix
+++ b/pkgs/development/interpreters/php_configurable/default.nix
@@ -122,11 +122,13 @@ composableDerivation {} ( fixed : {
     gdSupport = true;
   };
 
+  # only -O1
   configurePhase = ''
     iniFile=$out/etc/$name.ini
     [[ -z "$libxml2" ]] || export PATH=$PATH:$libxml2/bin
     ./configure --with-config-file-scan-dir=/etc --with-config-file-path=$out/etc --prefix=$out  $configureFlags
     echo configurePhase end
+    sed -e 's/-O2/-O1/g' -i Makefile # http://bugs.php.net/bug.php?id=47730&edit=3
   '';
 
   installPhase = ''