diff --git a/src/styles/Makefile.am b/src/styles/Makefile.am
index 9e0b73c5..d47a9be7 100644
--- a/src/styles/Makefile.am
+++ b/src/styles/Makefile.am
@@ -23,19 +23,29 @@ SASSFLAGS = --style=compressed --no-cache --sourcemap=none
 AUTOPREFIXER_BROWSER_SUPPORT := "> 1%, last 2 versions, Firefox ESR, Opera 12.1"
 STATIC = ../../static
 
-styles:
+pre:
 	@if [ "$(SASS)" = "" ]; then echo "Command 'sass' not found, required when building styles"; exit 1; fi
-	@if [ "$(AUTOPREFIXER)" = "" ]; then echo "Command 'autoprefixer' not found, required when building styles"; exit 1; fi
 	@if [ "$(NODEJS_SUPPORT_STYLES)" = "no" ]; then echo "Your version of node.js does not support building styles"; exit 1; fi
 	@if [ "$(SASS_SUPPORT_STYLES)" = "no" ]; then echo "Your version of sass does not support building styles"; exit 1; fi
 	$(MKDIR_P) $(STATIC)/css
+
+styles: bootstrap.min.css font-awesome.min.css csp.min.css main.min.css
+
+main.min.css: pre
+	@if [ "$(AUTOPREFIXER)" = "" ]; then echo "Command 'autoprefixer' not found, required when building main.css styles"; exit 1; fi
 	$(SASS) --compass --scss $(SASSFLAGS) \
 		$(CURDIR)/main.scss:$(STATIC)/css/main.min.css
 	$(AUTOPREFIXER) --browsers $(AUTOPREFIXER_BROWSER_SUPPORT) $(STATIC)/css/main.min.css
+
+bootstrap.min.css: pre
 	$(SASS) --compass --scss $(SASSFLAGS) \
 		$(CURDIR)/bootstrap.scss:$(STATIC)/css/bootstrap.min.css
+
+font-awesome.min.css: pre
 	$(SASS) --compass --scss $(SASSFLAGS) \
 		$(CURDIR)/font-awesome.scss:$(STATIC)/css/font-awesome.min.css
+
+csp.min.css: pre
 	$(SASS) --compass --scss $(SASSFLAGS) \
 		$(CURDIR)/csp.scss:$(STATIC)/css/csp.min.css