diff --git a/App/lib/core/Gen/Expr/ExprGenOps.vp b/App/lib/core/Gen/Expr/ExprGenOps.vp
index f59336a..e72f92e 100644
--- a/App/lib/core/Gen/Expr/ExprGenOps.vp
+++ b/App/lib/core/Gen/Expr/ExprGenOps.vp
@@ -791,7 +791,7 @@ novirtual class ExprGenOps(ExprGenBase.ExprGenBase):
             not_cond: llvmlite.Value* = self.coerce_cond_to_bool(pool, builder, mod, operand, trans)
             if not_cond is None:
                 return None
-            false_val: llvmlite.Value* = llvmlite.const_int(pool, 0, 1)
+            false_val: llvmlite.Value* = llvmlite.const_int(pool, 1, 0)
             return llvmlite.build_icmp(builder, llvmlite.ICMP_EQ, not_cond, false_val)
         elif uo.op == ast.OpKind.Invert:
             # ~x = x ^ -1