diff --git a/addons/main/script_macros.hpp b/addons/main/script_macros.hpp
index 891114b93c..c7997dee28 100644
--- a/addons/main/script_macros.hpp
+++ b/addons/main/script_macros.hpp
@@ -9,6 +9,8 @@
 #define DFUNC(var1) TRIPLES(ADDON,fnc,var1)
 #define DEFUNC(var1,var2) TRIPLES(DOUBLES(PREFIX,var1),fnc,var2)
 
+#undef QFUNC
+#undef QEFUNC
 #define QFUNC(var1) QUOTE(DFUNC(var1))
 #define QEFUNC(var1,var2) QUOTE(DEFUNC(var1,var2))
 
@@ -16,12 +18,14 @@
 #define SETVAR_SYS(var1,var2) setVariable [ARR_2(QUOTE(var1),var2)]
 #define SETPVAR_SYS(var1,var2) setVariable [ARR_3(QUOTE(var1),var2,true)]
 
+#undef GETVAR
 #define GETVAR(var1,var2,var3) var1 GETVAR_SYS(var2,var3)
 #define GETMVAR(var1,var2) missionNamespace GETVAR_SYS(var1,var2)
 #define GETUVAR(var1,var2) uiNamespace GETVAR_SYS(var1,var2)
 #define GETPRVAR(var1,var2) profileNamespace GETVAR_SYS(var1,var2)
 #define GETPAVAR(var1,var2) parsingNamespace GETVAR_SYS(var1,var2)
 
+#undef SETVAR
 #define SETVAR(var1,var2,var3) var1 SETVAR_SYS(var2,var3)
 #define SETPVAR(var1,var2,var3) var1 SETPVAR_SYS(var2,var3)
 #define SETMVAR(var1,var2) missionNamespace SETVAR_SYS(var1,var2)
@@ -82,6 +86,7 @@
 #ifdef DISABLE_COMPILE_CACHE
     #define PREP(fncName) DFUNC(fncName) = compile preprocessFileLineNumbers QPATHTOF(functions\DOUBLES(fnc,fncName).sqf)
 #else
+    #undef PREP
     #define PREP(fncName) [QPATHTOF(functions\DOUBLES(fnc,fncName).sqf), QFUNC(fncName)] call CBA_fnc_compileFunction
 #endif