diff --git a/apache.spec b/apache.spec
index 1b7b384..4837578 100644
--- a/apache.spec
+++ b/apache.spec
@@ -6,7 +6,7 @@
 
 Name:          apache
 Version:       2.4.34
-Release:       1mamba
+Release:       2mamba
 Epoch:         1
 Summary:       The Apache webserver
 Group:         System/Servers
@@ -436,6 +436,9 @@ exit 0
 %{_libdir}/apache/mod_suexec.so
 
 %changelog
+* Sat Aug 04 2018 Silvan Calarco <silvan.calarco@mambasoft.it> 2.4.34-2mamba
+- update_httpdconf: prevent a duplicate mpm module to be configured causing httpd restart failure
+
 * Mon Jul 16 2018 Automatic Build System <autodist@mambasoft.it> 2.4.34-1mamba
 - automatic version update by autodist
 
diff --git a/httpd-update_httpdconf.sh b/httpd-update_httpdconf.sh
index 0978e15..fd09e30 100644
--- a/httpd-update_httpdconf.sh
+++ b/httpd-update_httpdconf.sh
@@ -37,8 +37,9 @@ ANCHOR_LINE=`grep "^LoadModule .*" $OUTPUT_CONF | tail -n 1 | sed 's|\/|\\\\\/|g
 
 # adding new modules
 for a in ${MODULE[*]}; do
+   [ ${a:0:4} == "mpm_" ] && continue
    grep "^LoadModule .* $MODULES_APPEND/mod_$a.so" $OUTPUT_CONF >/dev/null || {
-      #echo "Configuring module $a"
+      echo "Configuring module $a"
       sed -i "/${ANCHOR_LINE}/a \
 LoadModule ${a}_module $MODULES_APPEND\/mod_$a.so" $OUTPUT_CONF
    ANCHOR_LINE=`echo "LoadModule ${a}_module $MODULES_APPEND/mod_$a.so" | sed 's|\/|\\\\\/|g'`