diff --git a/Makefile b/Makefile
index 6e3a75b1ee..57f0059684 100644
--- a/Makefile
+++ b/Makefile
@@ -8,7 +8,7 @@ PREFIX = ace
 BIN = @ace
 ZIP = ace3
 CBA = tools/cba
-FLAGS = -i $(CBA) -w unquoted-string
+FLAGS = -i $(CBA) -w unquoted-string -w redefinition-wo-undef
 
 $(BIN)/addons/$(PREFIX)_%.pbo: addons/%
 	@mkdir -p $(BIN)/addons
diff --git a/addons/medical/CfgActions.hpp b/addons/medical/CfgActions.hpp
index ccaac6f75b..387c3b8de2 100644
--- a/addons/medical/CfgActions.hpp
+++ b/addons/medical/CfgActions.hpp
@@ -3,4 +3,4 @@ class CfgActions {
     class Heal: None {
         show = 0;
     };
-};
\ No newline at end of file
+};