diff --git a/package.json b/package.json
index 833d6ed..e023f6d 100644
--- a/package.json
+++ b/package.json
@@ -7,7 +7,7 @@
         "url": "https://github.com/dramforever/vscode-ghc-simple"
     },
     "license": "ISC",
-    "version": "0.2.3",
+    "version": "0.2.4",
     "publisher": "dramforever",
     "engines": {
         "vscode": "^1.40.0"
diff --git a/src/features/diagnostics.ts b/src/features/diagnostics.ts
index 08160c8..7ceedbf 100644
--- a/src/features/diagnostics.ts
+++ b/src/features/diagnostics.ts
@@ -13,7 +13,7 @@ const regex = {
     // 7-10: variant 3: (line, col)
     message_base: /^(.+):(?:(\d+):(\d+)|(\d+):(\d+)-(\d+)|\((\d+),(\d+)\)-\((\d+),(\d+)\)): (.+)$/,
     single_line_error: /^error: (?:\[.+\] )?([^\[].*)$/,
-    single_line_warning: /^warning: \[(.+)\] (.+)$/,
+    single_line_warning: /^warning: \[(.+)\] ([^\[].*)$/,
     error: /^error:(?: \[.*\])?$/,
     warning: /^warning:(?: \[(.+)\])?$/
 };