--- build_tools/cflags.xml
+++ build_tools/cflags.xml
@@ -1,18 +1,17 @@
 	<category name="MENUSELECT_CFLAGS" displayname="Compiler Flags" positive_output="yes" remove_on_change=".lastclean">
-		<member name="DONT_OPTIMIZE" displayname="Disable Optimizations by the Compiler">
+		<member name="DONT_OPTIMIZE" displayname="Disable Optimizations by the Compiler"><defaultenabled>no</defaultenabled>
 			<support_level>core</support_level>
 		</member>
-		<member name="DEBUG_THREADS" displayname="Enable Thread Debugging">
+		<member name="DEBUG_THREADS" displayname="Enable Thread Debugging"><defaultenabled>no</defaultenabled>
 			<support_level>core</support_level>
 		</member>
-		<member name="REF_DEBUG" displayname="Enable reference count debugging">
+		<member name="REF_DEBUG" displayname="Enable reference count debugging"><defaultenabled>no</defaultenabled>
 			<support_level>extended</support_level>
 		</member>
-		<member name="STATIC_BUILD" displayname="Build static binaries">
+		<member name="STATIC_BUILD" displayname="Build static binaries"><defaultenabled>no</defaultenabled>
 			<support_level>extended</support_level>
 		</member>
-		<member name="LOADABLE_MODULES" displayname="Runtime module loading">
-			<defaultenabled>yes</defaultenabled>
+		<member name="LOADABLE_MODULES" displayname="Runtime module loading"><defaultenabled>yes</defaultenabled>
 			<support_level>core</support_level>
 		</member>
 		<member name="DEBUG_FD_LEAKS" displayname="Enable File Descriptor Leak Detection">
@@ -24,7 +23,7 @@
 			<defaultenabled>no</defaultenabled>
 			<support_level>extended</support_level>
 		</member>
-		<member name="LOW_MEMORY" displayname="Optimize for Low Memory Usage">
+		<member name="LOW_MEMORY" displayname="Optimize for Low Memory Usage"><defaultenabled>no</defaultenabled>
 			<support_level>extended</support_level>
 		</member>
 		<member name="BETTER_BACKTRACES" displayname="Use libbfd (GPL) to generate better inline backtraces">