diff --git a/makefiles/targets.mk b/makefiles/targets.mk
index 1b2f5de..b63534d 100644
--- a/makefiles/targets.mk
+++ b/makefiles/targets.mk
@@ -102,9 +102,9 @@ endif
 
 libnatpmp.a: | sanity-checks
 ifeq ($(OS), Windows_NT)
-	+ "$(MAKE)" -C vendor/nim-nat-traversal/vendor/libnatpmp CC=gcc CFLAGS="-Wall -Os -DWIN32 -DNATPMP_STATICLIB -DENABLE_STRNATPMPERR -DNATPMP_MAX_RETRIES=4" $@ $(HANDLE_OUTPUT)
+	+ "$(MAKE)" -C vendor/nim-nat-traversal/vendor/libnatpmp CC=gcc CFLAGS="-Wall -Os -DWIN32 -DNATPMP_STATICLIB -DENABLE_STRNATPMPERR -DNATPMP_MAX_RETRIES=4 $(CFLAGS)" $@ $(HANDLE_OUTPUT)
 else
-	+ "$(MAKE)" CFLAGS="-Wall -Os -DENABLE_STRNATPMPERR -DNATPMP_MAX_RETRIES=4" -C vendor/nim-nat-traversal/vendor/libnatpmp $@ $(HANDLE_OUTPUT)
+	+ "$(MAKE)" CFLAGS="-Wall -Os -DENABLE_STRNATPMPERR -DNATPMP_MAX_RETRIES=4 $(CFLAGS)" -C vendor/nim-nat-traversal/vendor/libnatpmp $@ $(HANDLE_OUTPUT)
 endif
 
 #- depends on Git submodules being initialised
diff --git a/scripts/build_nim.sh b/scripts/build_nim.sh
index 40a1d0a..f306467 100755
--- a/scripts/build_nim.sh
+++ b/scripts/build_nim.sh
@@ -27,7 +27,7 @@ CI_CACHE="$4"
 [[ -z "$CC" ]] && CC="gcc"
 # to build csources in parallel, set MAKE="make -jN"
 [[ -z "$MAKE" ]] && MAKE="make"
-# for 32-bit binaries on a 64-bit Windows host
+# for 32-bit binaries on a 64-bit host
 UCPU=""
 [[ "$ARCH_OVERRIDE" == "x86" ]] && UCPU="ucpu=i686"
 [[ -z "$NIM_BUILD_MSG" ]] && NIM_BUILD_MSG="Building the Nim compiler"