diff --git a/scripts/travis_before_script.sh b/scripts/travis_before_script.sh
index 295f81fb9f..9abe6e7682 100755
--- a/scripts/travis_before_script.sh
+++ b/scripts/travis_before_script.sh
@@ -37,6 +37,22 @@ function step () {
 	echo
 }
 
+# -----------------------------------------------------------------------------
+# Fix deprecated warning in PHP 5.6 builds:
+# "Automatically populating $HTTP_RAW_POST_DATA is deprecated [...]"
+# https://www.bram.us/2014/10/26/php-5-6-automatically-populating-http_raw_post_data-is-deprecated-and-will-be-removed-in-a-future-version/
+# https://bugs.php.net/bug.php?id=66763
+
+if [[ $TRAVIS_PHP_VERSION = '5.6' ]]
+then
+	# Generate custom php.ini settings
+	cat <<-EOF >mantis_config.ini
+		always_populate_raw_post_data=-1
+		EOF
+	phpenv config-add mantis_config.ini
+fi
+
+
 # -----------------------------------------------------------------------------
 step "Create database $MANTIS_DB_NAME"