1 files changed, 1 insertions, 1 deletions
diff --git a/Makefile b/Makefile
index 2f20b58..1f0366d 100644
--- a/Makefile
+++ b/Makefile
@@ -19,7 +19,7 @@ all: build
 -include config/include.mk
 -include shared/themes/include.mk
 
-always-make = $(filter -B,$(MAKEFLAGS))
+always-make = $(findstring B,$(MAKEFLAGS))
 avoid-broken-git = $(shell cd content && git symbolic-ref -q HEAD > /dev/null || echo " --no-rcs")
 
 iki_configfiles := $(or $(patsubst %.in,%,$(wildcard config/ikiwiki*.setup.in)),config/ikiwiki.setup)