diff --git a/devel/boost-all/compiled.mk b/devel/boost-all/compiled.mk
index 2497855c5e8b..311a7fae79cb 100644
--- a/devel/boost-all/compiled.mk
+++ b/devel/boost-all/compiled.mk
@@ -19,7 +19,7 @@ MAKE_ARGS=	--layout=system \
 # Our compiler-flags will be added AFTER those set by bjam. We remove
 # the optimization level, because Boost sets it itself (to -O3 in case
 # of gcc/g++):
-MAKE_ARGS+=    cxxflags="${CXXFLAGS:N-O*}" cflags="${CFLAGS:N-O*}"
+MAKE_ARGS+=	cxxflags="${CXXFLAGS:N-O*}" cflags="${CFLAGS:N-O*}"
 
 MAKE_ARGS+=	--toolset=${CHOSEN_COMPILER_TYPE} \
 		${_MAKE_JOBS}