diff --git a/App/lib/core/Gen/Expr/ExprGenOps.vp b/App/lib/core/Gen/Expr/ExprGenOps.vp
index 767d25f..f59336a 100644
--- a/App/lib/core/Gen/Expr/ExprGenOps.vp
+++ b/App/lib/core/Gen/Expr/ExprGenOps.vp
@@ -791,8 +791,8 @@ 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
-            true_val: llvmlite.Value* = llvmlite.const_int(pool, 1, 1)
-            return llvmlite.build_icmp(builder, llvmlite.ICMP_EQ, not_cond, true_val)
+            false_val: llvmlite.Value* = llvmlite.const_int(pool, 0, 1)
+            return llvmlite.build_icmp(builder, llvmlite.ICMP_EQ, not_cond, false_val)
         elif uo.op == ast.OpKind.Invert:
             # ~x = x ^ -1
             operand_bits_inv: int = self.get_llvm_type_bits(operand.Ty)