diff --git a/frontends/amiga/dist/Install b/frontends/amiga/dist/Install
index e8d9d0ed7..55631905e 100755
--- a/frontends/amiga/dist/Install
+++ b/frontends/amiga/dist/Install
@@ -289,6 +289,16 @@
 
 (complete 75)
 
+; Force disable use of AltiVec if we don't have it
+(if (database "vectorunit" "0")
+	(
+		(textfile
+			(dest "ENVARC:JSIMD_FORCENONE")
+			(append "1")
+		)
+	)
+)
+
 (if (= (exists "ENVARC:Sys/def_css.info") 0)
 	(copyfiles
 		(prompt "Copying default CSS icon")
diff --git a/frontends/amiga/gui.c b/frontends/amiga/gui.c
index 688aa59da..63a240656 100644
--- a/frontends/amiga/gui.c
+++ b/frontends/amiga/gui.c
@@ -5553,7 +5553,7 @@ int main(int argc, char** argv)
 		LOG("AltiVec detected");
 	} else {
 		LOG("AltiVec NOT detected");
-		SetVar("JSIMD_FORCENONE", "1", 1, GVF_LOCAL_ONLY);
+		SetVar("JSIMD_FORCENONE", "1", 1, GVF_GLOBAL_ONLY | GVF_SAVE_VAR);
 	}
 #endif