diff --git a/libsrc/jsyntaxpane/jsyntaxpane/src/main/jflex/jsyntaxpane/lexers/actionscript.flex b/libsrc/jsyntaxpane/jsyntaxpane/src/main/jflex/jsyntaxpane/lexers/actionscript.flex
index 05e7c9c0c..e69741b27 100644
--- a/libsrc/jsyntaxpane/jsyntaxpane/src/main/jflex/jsyntaxpane/lexers/actionscript.flex
+++ b/libsrc/jsyntaxpane/jsyntaxpane/src/main/jflex/jsyntaxpane/lexers/actionscript.flex
@@ -110,6 +110,8 @@ SingleCharacter = [^\r\n\'\\]
 OIdentifierCharacter = [^\r\n\u00A7\\]
 Preprocessor = \u00A7\u00A7 {Identifier}
 
+RegExp = \/([^\r\n/]|\\\/)+\/[a-z]*
+
 %state STRING, CHARLITERAL, XMLSTARTTAG, XML, OIDENTIFIER
 
 %%
@@ -167,6 +169,8 @@ Preprocessor = \u00A7\u00A7 {Identifier}
   "true"                         { return token(TokenType.KEYWORD); }
 
 
+  {RegExp}                       { return token(TokenType.REGEX); }
+
   /* operators */
 
   "("                            { return token(TokenType.OPERATOR,  PARAN); }