diff --git a/make-includes/standard_rules.make b/make-includes/standard_rules.make
index c477d9e..f6852cc 100644
--- a/make-includes/standard_rules.make
+++ b/make-includes/standard_rules.make
@@ -287,4 +287,4 @@
 # Note PlantUML generated diagrams are already minimal dimensions, so no need to crop.
 #
 %.pdf: %.pu
-	$(PLANTUML) -tsvg -pipe < $< | $(RSVG_CONVERT) --format pdf > $(IMGDIR)/$@
+	$(PLANTUML) -tsvg -pipe < $< | $(RSVG_CONVERT) --format pdf | $(PDFCROP) - $(IMGDIR)/$@