diff --git a/syntax/CurlyWASM.sublime-syntax b/syntax/CurlyWASM.sublime-syntax
index 7d61646..0c2619f 100644
--- a/syntax/CurlyWASM.sublime-syntax
+++ b/syntax/CurlyWASM.sublime-syntax
@@ -103,6 +103,9 @@ contexts:
     - match: '\b\d+(_f)\b'
       scope: constant.numeric.float.curlywasm
 
+    - match: \b0x[0-9a-fA-F]+_f\b
+      scope: constant.numeric.float.curlywasm
+
     - match: \b([0-9]+\.[0-9]+)\b
       scope: constant.numeric.float.curlywasm