diff --git a/.github/workflows/checks.yml b/.github/workflows/checks.yml
index 35facdb4..b2d483ed 100644
--- a/.github/workflows/checks.yml
+++ b/.github/workflows/checks.yml
@@ -112,7 +112,10 @@ jobs:
       - name: Install dependencies
         run: make vendor
 
-      - name: PHPCS
+      - name: Lint templates
+        run: make lint-templates
+
+      - name: Lint app
         if: always()
         run: |
           echo "::add-matcher::.github/matchers/phpcs.json"
diff --git a/Makefile b/Makefile
index d0f98f96..c1203701 100644
--- a/Makefile
+++ b/Makefile
@@ -8,13 +8,16 @@ entrypoints   = $(wildcard src/*.js)
 
 # Misc variables.
 export PATH             := vendor/bin:node_modules/.bin:$(PATH)
+NPROC                   := 1
 
 ifneq ($(OS),Windows_NT) # Not for Windows
 UNAME_S := $(shell uname -s)
 ifeq ($(UNAME_S),Darwin) # For Mac
 SHELL                   := PATH=$(PATH) /bin/bash
+NPROC                   := $(shell sysctl -n hw.logicalcpu)
 else
 SHELL                   := /bin/bash
+NPROC                   := $(shell nproc)
 endif
 endif
 override GIT_VERSION    := $(shell git --no-pager describe --always --tags)
@@ -170,9 +173,18 @@ check: lint analyse test
 .PHONY: lint
 lint: lint-php lint-js
 
-# Lint php code with phpcs.
+# Lint php code.
 .PHONY: lint-php
-lint-php: $(phpcs_dir) vendor
+lint-php: lint-templates lint-app
+
+# Run PHP syntax check on template files in parallel thanks to xargs
+.PHONY: lint-templates
+lint-templates:
+	echo app/view/templates/*.php | xargs -P$(NPROC) -n1 php --syntax-check > /dev/null
+
+# Lint backend php code with phpcs.
+.PHONY: lint-app
+lint-app: $(phpcs_dir) vendor
 	phpcs --report-full --report-summary --cache=$(phpcs_dir)/result.cache || { printf "run 'make fix'\n\n"; exit 1; }
 
 .PHONY: lint-js