diff --git a/compiler/lineinfos.nim b/compiler/lineinfos.nim
index 20e8c350d0..b6272ccdce 100644
--- a/compiler/lineinfos.nim
+++ b/compiler/lineinfos.nim
@@ -186,7 +186,7 @@ const
     warnAnyEnumConv: "$1",
     warnHoleEnumConv: "$1",
     warnCstringConv: "$1",
-    warnPtrToCstringConv: "unsafe conversion to 'cstring' from '$1'; this will become a compile time error in the future",
+    warnPtrToCstringConv: "unsafe conversion to 'cstring' from '$1'; Use a `cast` operation like `cast[cstring](x)`; this will become a compile time error in the future",
     warnEffect: "$1",
     warnCastSizes: "$1", # deadcode
     warnAboveMaxSizeSet: "$1",