diff --git a/lib/Makefile.netware b/lib/Makefile.netware
index 34368c1c1..9b105bb05 100644
--- a/lib/Makefile.netware
+++ b/lib/Makefile.netware
@@ -218,7 +218,7 @@ ifdef XDCOPT
 	XDCDATA = $(OBJDIR)/$(TARGET).xdc
 endif
 
-ifeq ($(findstring linux,$(OSTYPE)),linux)
+ifeq ($(findstring /sh,$(SHELL)),/sh)
 DL	= '
 DS	= /
 PCT	= %
diff --git a/src/Makefile.netware b/src/Makefile.netware
index 56a35852a..b47eb68e6 100644
--- a/src/Makefile.netware
+++ b/src/Makefile.netware
@@ -215,7 +215,7 @@ ifdef XDCOPT
 	XDCDATA = $(OBJDIR)/$(TARGET).xdc
 endif
 
-ifeq ($(findstring linux,$(OSTYPE)),linux)
+ifeq ($(findstring /sh,$(SHELL)),/sh)
 DL	= '
 DS	= /
 PCT	= %