diff --git a/oonf-olsrd2/Makefile b/oonf-olsrd2/Makefile
index f744861..c9d3d52 100644
--- a/oonf-olsrd2/Makefile
+++ b/oonf-olsrd2/Makefile
@@ -28,7 +28,10 @@ CMAKE_OPTIONAL_PLUGINS:= $(subst $(SPACE),;,$(strip \
         $(if $(filter y,$(CONFIG_OONF_GENERIC_HTTP)),http,) \
     ))
 
-CMAKE_OPTIONS=-D OONF_NO_WERROR:Bool=true \
+BUILD_TYPE:= $(if $(filter y,$(CONFIG_DEBUG)),Debug,Release)
+
+CMAKE_OPTIONS=-D CMAKE_BUILD_TYPE:String=$(BUILD_TYPE) \
+              -D OONF_NO_WERROR:Bool=true \
               -D OONF_LOGGING_LEVEL:String=debug \
               -D OONF_NO_TESTING:Bool=true \
               -D UCI:Bool=true \