diff --git a/flex-2.6.0-gcc-5.3.0-c-comment.patch b/flex-2.6.0-gcc-5.3.0-c-comment.patch
new file mode 100644
index 0000000..7417616
--- /dev/null
+++ b/flex-2.6.0-gcc-5.3.0-c-comment.patch
@@ -0,0 +1,22 @@
+From 07d89829cce4527c7614a34642d4b2c2ef5d6005 Mon Sep 17 00:00:00 2001
+From: Will Estes <westes575@gmail.com>
+Date: Fri, 11 Dec 2015 09:45:14 -0500
+Subject: [PATCH] Commented in C style in skeleton; fixed sf#195
+
+---
+ src/flex.skl | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/src/flex.skl b/src/flex.skl
+index b63c8c8..40287b6 100644
+--- a/src/flex.skl
++++ b/src/flex.skl
+@@ -2350,7 +2350,7 @@ void yyFlexLexer::yyensure_buffer_stack(void)
+ 		 * scanner will even need a stack. We use 2 instead of 1 to avoid an
+ 		 * immediate realloc on the next call.
+          */
+-		num_to_alloc = 1; // After all that talk, this was set to 1 anyways...
++      num_to_alloc = 1; /* After all that talk, this was set to 1 anyways... */
+ 		YY_G(yy_buffer_stack) = (struct yy_buffer_state**)yyalloc
+ 								(num_to_alloc * sizeof(struct yy_buffer_state*)
+ 								M4_YY_CALL_LAST_ARG);
diff --git a/flex.spec b/flex.spec
index b5633b2..350f01e 100644
--- a/flex.spec
+++ b/flex.spec
@@ -1,6 +1,6 @@
 Name:          flex
 Version:       2.6.0
-Release:       1mamba
+Release:       2mamba
 Summary:       A tool for creating scanners (loxical pattern recognizers)
 Group:         Development/Tools
 Vendor:        openmamba
@@ -8,12 +8,13 @@ Distribution:  openmamba
 Packager:      Silvan Calarco <silvan.calarco@mambasoft.it>
 URL:           http://flex.sourceforge.net/
 Source:        http://downloads.sourceforge.net/sourceforge/flex/flex-%{version}.tar.bz2
+Patch0:        flex-2.6.0-gcc-5.3.0-c-comment.patch
 License:       BSD
 ## AUTOBUILDREQ-BEGIN
-BuildRequires: bash
 BuildRequires: glibc-devel
-BuildRequires: texinfo
 ## AUTOBUILDREQ-END
+BuildRequires: bash
+BuildRequires: texinfo
 %if "%{stage1}" != "1"
 BuildRequires: indent >= 2.2.9
 BuildRequires: help2man >= 1.33.1
@@ -51,6 +52,7 @@ This package contains libraries and header files for developing applications tha
 
 %prep
 %setup -q
+%patch0 -p1
 
 %build
 %configure
@@ -111,6 +113,9 @@ exit 0
 #%doc COPYING NEWS README* TODO THANKS
 
 %changelog
+* Sat Dec 26 2015 Silvan Calarco <silvan.calarco@mambasoft.it> 2.6.0-2mamba
+- added upstream patch to fix a cxx-style comment in c code compiler warning
+
 * Sat Nov 21 2015 Automatic Build System <autodist@mambasoft.it> 2.6.0-1mamba
 - automatic version update by autodist