diff --git a/Makefile.inc1 b/Makefile.inc1
index 8a438984b571..5718e1701cf0 100644
--- a/Makefile.inc1
+++ b/Makefile.inc1
@@ -48,10 +48,11 @@
 .error "Both TARGET and TARGET_ARCH must be defined."
 .endif
 
+LOCALBASE?=	/usr/local
+
 # Cross toolchain changes must be in effect before bsd.compiler.mk
 # so that gets the right CC, and pass CROSS_TOOLCHAIN to submakes.
 .if defined(CROSS_TOOLCHAIN)
-LOCALBASE?=	/usr/local
 .include "${LOCALBASE}/share/toolchains/${CROSS_TOOLCHAIN}.mk"
 CROSSENV+=CROSS_TOOLCHAIN="${CROSS_TOOLCHAIN}"
 .endif
@@ -1314,7 +1315,7 @@ packagekernel:
 # Build the API documentation with doxygen
 #
 doxygen: .PHONY
-	@if [ ! -x `/usr/bin/which doxygen` ]; then \
+	@if [ ! -x ${LOCALBASE}/bin/doxygen ]; then \
 		echo "You need doxygen (devel/doxygen) to generate the API documentation of the kernel." | /usr/bin/fmt; \
 		exit 1; \
 	fi