diff --git a/install-php-extensions b/install-php-extensions
index c76ebfb..ddf02f1 100755
--- a/install-php-extensions
+++ b/install-php-extensions
@@ -123,6 +123,23 @@ normalizePHPModuleName() {
 	printf '%s' "$normalizePHPModuleName_name"
 }
 
+# Get the PECL name of PHP extension
+#
+# Arguments:
+#   $1: the name of the extension
+#
+# Output:
+#   The PECL name of the extension
+getPeclModuleName() {
+	normalizePHPModuleName_name="$1"
+	case "$normalizePHPModuleName_name" in
+		http)
+			normalizePHPModuleName_name=pecl_http
+			;;
+	esac
+	printf '%s' "$normalizePHPModuleName_name"
+}
+
 # Parse a module name (and optionally version) as received via command arguments, extracting the version and normalizing it
 # Example:
 #   xdebug-2.9.8
@@ -1033,10 +1050,12 @@ setTargetTriplet() {
 #   The number of processors to be used
 getCompilationProcessorCount() {
 	case "$1" in
-		amqp | bcmath | bz2 | calendar | exif | gd | gettext | grpc | imagick | intl | mysqli | opcache | pcntl | pdo_mysql | protobuf | redis | soap | sockets | tidy | xdebug | xsl | yaml | zip)
+		amqp | bcmath | bz2 | calendar | exif | gd | gettext | grpc | http | imagick | intl | mysqli | opcache | pcntl | pdo_mysql | protobuf | redis | soap | sockets | tidy | xdebug | xsl | yaml | zip)
+			# These extensions support parallel compilation
 			getProcessorCount
 			;;
 		*)
+			# We don't know - it's safer to disable parallel compilation
 			echo 1
 			;;
 	esac
@@ -1525,7 +1544,6 @@ installRemoteModule() {
 			fi
 			;;
 		http)
-			installRemoteModule_module=pecl_http
 			if test -z "$installRemoteModule_version"; then
 				if test $PHP_MAJMIN_VERSION -le 506; then
 					installRemoteModule_version=2.6.0
@@ -2126,12 +2144,8 @@ installRemoteModule() {
 				docker-php-ext-enable "$installRemoteModule_module"
 			fi
 			;;
-		pecl_http)
-			# http must be loaded after raphf and propro
-			docker-php-ext-enable --ini-name "xx-php-ext-http.ini" http
-			;;
-		memcached)
-			# memcached must be loaded after msgpack
+		http | memcached)
+			# http must be loaded after raphf and propro, memcached must be loaded after msgpack
 			docker-php-ext-enable --ini-name "xx-php-ext-$installRemoteModule_module.ini" "$installRemoteModule_module"
 			;;
 		snuffleupagus)
@@ -2223,18 +2237,19 @@ installPeclPackage() {
 	if ! test -f "$CONFIGURE_FILE"; then
 		printf '\n' >"$CONFIGURE_FILE"
 	fi
+	installPeclPackage_name="$(getPeclModuleName "$1")"
 	if test $USE_PICKLE -eq 0; then
 		if test -z "${2:-}"; then
-			installPeclPackage_fullname="$1"
+			installPeclPackage_fullname="$installPeclPackage_name"
 		else
-			installPeclPackage_fullname="$1-$2"
+			installPeclPackage_fullname="$installPeclPackage_name-$2"
 		fi
 		cat "$CONFIGURE_FILE" | MAKE="make -j$(getCompilationProcessorCount $1)" CPPFLAGS="${3:-}" pecl install "$installPeclPackage_fullname"
 	else
 		if test -z "${2:-}"; then
-			installPeclPackage_fullname="$1"
+			installPeclPackage_fullname="$installPeclPackage_name"
 		else
-			installPeclPackage_fullname="$1@$2"
+			installPeclPackage_fullname="$installPeclPackage_name@$2"
 		fi
 		MAKE="make -j$(getCompilationProcessorCount $1)" CPPFLAGS="${3:-}" /tmp/pickle install --tmp-dir=/tmp/pickle.tmp --no-interaction --version-override='' --with-configure-options "$CONFIGURE_FILE" -- "$installPeclPackage_fullname"
 	fi