diff --git a/code/__DEFINES/_auxtools.dm b/code/__DEFINES/_auxtools.dm
index ab07becbd9..fc5dfd4378 100644
--- a/code/__DEFINES/_auxtools.dm
+++ b/code/__DEFINES/_auxtools.dm
@@ -1,9 +1,12 @@
 #define AUXMOS (world.system_type == MS_WINDOWS ? "auxmos.dll" : __detect_auxmos())
 
 /proc/__detect_auxmos()
-	if (fexists("./libauxmos.so"))
-		return "./libauxmos.so"
-	else if (fexists("[world.GetConfig("env", "HOME")]/.byond/bin/libauxmos.so"))
-		return "[world.GetConfig("env", "HOME")]/.byond/bin/libauxmos.so"
-	else
-		CRASH("Could not find libauxmos.so")
+	var/static/known_auxmos_var
+	if(!known_auxmos_var)
+		if (fexists("./libauxmos.so"))
+			known_auxmos_var = "./libauxmos.so"
+		else if (fexists("[world.GetConfig("env", "HOME")]/.byond/bin/libauxmos.so"))
+			known_auxmos_var = "[world.GetConfig("env", "HOME")]/.byond/bin/libauxmos.so"
+		else
+			CRASH("Could not find libauxmos.so")
+	return known_auxmos_var