diff --git a/util/dell-flash-unlock/Makefile b/util/dell-flash-unlock/Makefile
index aee07167..8528c10e 100644
--- a/util/dell-flash-unlock/Makefile
+++ b/util/dell-flash-unlock/Makefile
@@ -3,16 +3,14 @@
 
 CC=cc
 CFLAGS=-Wall -Wextra -Werror -O2 -pedantic
-ifeq ($(shell uname), OpenBSD)
-	CFLAGS += -l$(shell uname -p)
-endif
-ifeq ($(shell uname), NetBSD)
-	CFLAGS += -l$(shell uname -p)
-endif
 SRCS=dell_flash_unlock.c accessors.c
 
 all: $(SRCS) accessors.h
-	$(CC) $(CFLAGS) $(SRCS) -o dell_flash_unlock
+	CFLAGS="$(CFLAGS)"; \
+	if [ $$(uname) = OpenBSD ] || [ $$(uname) = NetBSD ]; then \
+		CFLAGS="$$CFLAGS -l$$(uname -p)"; \
+	fi; \
+	$(CC) $$CFLAGS $(SRCS) -o dell_flash_unlock
 
 clean:
 	rm -f dell_flash_unlock
diff --git a/util/dell-flash-unlock/README.md b/util/dell-flash-unlock/README.md
index e179e77c..7333f63e 100644
--- a/util/dell-flash-unlock/README.md
+++ b/util/dell-flash-unlock/README.md
@@ -21,16 +21,13 @@ around 2008 (E6400 era).
   with that option set.
 
 ### OpenBSD/NetBSD/FreeBSD
-- The makefile is not currently compatible with POSIX make; install and use GNU
-  Make (gmake) to build dell-flash-unlock instead of make
 - On OpenBSD/NetBSD/FreeBSD, ensure you are booting with securelevel set to -1.
 
 ### General
 Make sure an AC adapter is plugged into your system
 
-Run `make` (or `gmake` on BSD) to compile the utility, and then run
-`./dell_flash_unlock` with root/superuser permissions and follow the directions
-it outputs.
+Run `make` to compile the utility, and then run `./dell_flash_unlock` with
+root/superuser permissions and follow the directions it outputs.
 
 ## Confirmed supported devices
 - Latitude E6400, E6500