diff --git a/install-php-extensions b/install-php-extensions
index 3b4cb0c..d8de6e8 100755
--- a/install-php-extensions
+++ b/install-php-extensions
@@ -1093,7 +1093,7 @@ setTargetTriplet() {
 #   The number of processors to be used
 getCompilationProcessorCount() {
 	case "$1" in
-		amqp | bcmath | bz2 | calendar | exif | gd | geospatial | gettext | grpc | http | imagick | intl | mysqli | opcache | pcntl | pdo_mysql | protobuf | redis | ssh2 | soap | sockets | tidy | xdebug | xsl | yaml | zip)
+		amqp | bcmath | bz2 | calendar | exif | gd | geospatial | gettext | gmagick | grpc | http | imagick | intl | mysqli | opcache | pcntl | pdo_mysql | protobuf | redis | ssh2 | soap | sockets | tidy | xdebug | xsl | yaml | zip)
 			# These extensions support parallel compilation
 			getProcessorCount
 			;;