diff --git a/src/cmd/compile/internal/ssa/gen/generic.rules b/src/cmd/compile/internal/ssa/gen/generic.rules
index 2a5deaab1a..99f8d0a984 100644
--- a/src/cmd/compile/internal/ssa/gen/generic.rules
+++ b/src/cmd/compile/internal/ssa/gen/generic.rules
@@ -1009,11 +1009,11 @@
 	&& mem.Op == OpStaticCall
 	&& isSameSym(mem.Aux, "runtime.newobject")
 	&& c == config.ctxt.FixedFrameSize() + config.RegSize // offset of return value
-	&& warnRule(config.Debug_checknil() && int(v.Pos) > 1, v, "removed nil check")
+	&& warnRule(config.Debug_checknil() && v.Pos.Line() > 1, v, "removed nil check")
 	-> (Invalid)
 (NilCheck (OffPtr (Load (OffPtr [c] (SP)) mem)) mem)
 	&& mem.Op == OpStaticCall
 	&& isSameSym(mem.Aux, "runtime.newobject")
 	&& c == config.ctxt.FixedFrameSize() + config.RegSize // offset of return value
-	&& warnRule(config.Debug_checknil() && int(v.Pos) > 1, v, "removed nil check")
+	&& warnRule(config.Debug_checknil() && v.Pos.Line() > 1, v, "removed nil check")
 	-> (Invalid)