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-rw-r--r--Src/math.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/Src/math.c b/Src/math.c
index e87a286fb..344670d6e 100644
--- a/Src/math.c
+++ b/Src/math.c
@@ -1109,6 +1109,8 @@ mathparse(int pc)
 	    }
 	    break;
 	case QUEST:
+	    if (stack[sp].val.type == MN_UNSET)
+		stack[sp].val = getnparam(stack[sp].lval);
 	    q = (stack[sp].val.type == MN_FLOAT) ? (zlong)stack[sp].val.u.d :
 		stack[sp].val.u.l;