diff --git a/src/cpu/x86_ops_bcd.h b/src/cpu/x86_ops_bcd.h
index efb0de264..385d63cd7 100644
--- a/src/cpu/x86_ops_bcd.h
+++ b/src/cpu/x86_ops_bcd.h
@@ -31,14 +31,7 @@ static int opAAD(uint32_t fetchdat)
 static int opAAM(uint32_t fetchdat)
 {
         int base = getbytef();
-
-        if (base == 0) {
-		x86de(NULL, 0);
-		return 1;
-	}
-
-        if (!cpu_isintel) base = 10;
-
+        if (!base || !cpu_isintel) base = 10;
         AH = AL / base;
         AL %= base;
         setznp16(AX);