diff --git a/install/gtk/configure b/install/gtk/configure
index f243d9f196..3795ffbcfb 100755
--- a/install/gtk/configure
+++ b/install/gtk/configure
@@ -5692,7 +5692,7 @@ fi
 
 WXDEBUG=
 if test "$USE_DEBUG_INFO" = 1 ; then
-  WXDEBUG="-g"
+  WXDEBUG="-g -O0"
 fi
 
 
diff --git a/install/gtk/configure.in b/install/gtk/configure.in
index 353601aeb5..507f0cdb6c 100644
--- a/install/gtk/configure.in
+++ b/install/gtk/configure.in
@@ -951,7 +951,7 @@ fi
 
 WXDEBUG=
 if test "$USE_DEBUG_INFO" = 1 ; then
-  WXDEBUG="-g"
+  WXDEBUG="-g -O0"
 fi
 AC_SUBST(WXDEBUG)