diff --git a/contrib/gen_html/gen-zstd-manual.sh b/contrib/gen_html/gen-zstd-manual.sh
new file mode 100755
index 00000000..57a8b6ea
--- /dev/null
+++ b/contrib/gen_html/gen-zstd-manual.sh
@@ -0,0 +1,9 @@
+#!/bin/sh
+
+LIBVER_MAJOR_SCRIPT=`sed -n '/define ZSTD_VERSION_MAJOR/s/.*[[:blank:]]\([0-9][0-9]*\).*/\1/p' < ../../lib/zstd.h`
+LIBVER_MINOR_SCRIPT=`sed -n '/define ZSTD_VERSION_MINOR/s/.*[[:blank:]]\([0-9][0-9]*\).*/\1/p' < ../../lib/zstd.h`
+LIBVER_PATCH_SCRIPT=`sed -n '/define ZSTD_VERSION_RELEASE/s/.*[[:blank:]]\([0-9][0-9]*\).*/\1/p' < ../../lib/zstd.h`
+LIBVER_SCRIPT=$LIBVER_MAJOR_SCRIPT.$LIBVER_MINOR_SCRIPT.$LIBVER_PATCH_SCRIPT
+
+echo ZSTD_VERSION=$LIBVER_SCRIPT
+./gen_html $LIBVER_SCRIPT ../../lib/zstd.h ./zstd_manual.html
diff --git a/contrib/gen_html/gen_html.cpp b/contrib/gen_html/gen_html.cpp
index 2157829f..d3ab265a 100644
--- a/contrib/gen_html/gen_html.cpp
+++ b/contrib/gen_html/gen_html.cpp
@@ -90,7 +90,7 @@ int main(int argc, char *argv[]) {
 
     if (argc < 4) {
         cout << "usage: " << argv[0] << " [zstd_version] [input_file] [output_html]" << endl;
-        exit(0);
+        return 1;
     }
 
     version = "zstd " + string(argv[1]) + " Manual";
@@ -98,14 +98,14 @@ int main(int argc, char *argv[]) {
     istream.open(argv[2], ifstream::in);
     if (!istream.is_open()) {
         cout << "Error opening file " << argv[2] << endl;
-        exit(0);
+        return 1;
     }
 
     ostream.open(argv[3], ifstream::out);
     if (!ostream.is_open()) {
         cout << "Error opening file " << argv[3] << endl;
-        exit(0);
-    }
+        return 1;
+   }
 
     while (getline(istream, line)) {
         input.push_back(line);