diff --git a/configure.ac b/configure.ac
index 705a3d51..ef4a4290 100644
--- a/configure.ac
+++ b/configure.ac
@@ -549,7 +549,7 @@ else
   fi
 fi
 
-#MODSEC_EXTRA_CFLAGS="$pcre_study $pcre_match_limit $pcre_match_limit_recursion $debug_conf $debug_cache $debug_acmp $debug_mem $perf_meas $modsec_api"
+MODSEC_EXTRA_CFLAGS="$pcre_study $pcre_match_limit $pcre_match_limit_recursion $debug_conf $debug_cache $debug_acmp $debug_mem $perf_meas $modsec_api"
 
 APXS_WRAPPER=build/apxs-wrapper
 APXS_EXTRA_CFLAGS=""