diff --git a/modules/gmake/gmake.lua b/modules/gmake/gmake.lua
index 188bb078..4c184d3d 100644
--- a/modules/gmake/gmake.lua
+++ b/modules/gmake/gmake.lua
@@ -274,12 +274,9 @@
 
 
 	function make.shellType()
-		_p('SHELLTYPE := msdos')
-		_p('ifeq (,$(ComSpec)$(COMSPEC))')
-		_p('  SHELLTYPE := posix')
-		_p('endif')
-		_p('ifeq (/bin,$(findstring /bin,$(SHELL)))')
-		_p('  SHELLTYPE := posix')
+		_p('SHELLTYPE := posix')
+		_p('ifeq (.exe,$(findstring .exe,$(ComSpec)))')
+		_p('\tSHELLTYPE := msdos')
 		_p('endif')
 		_p('')
 	end
diff --git a/modules/gmake2/gmake2.lua b/modules/gmake2/gmake2.lua
index 025ebf50..d6c6ad1f 100644
--- a/modules/gmake2/gmake2.lua
+++ b/modules/gmake2/gmake2.lua
@@ -273,12 +273,9 @@
 
 
 	function gmake2.shellType()
-		_p('SHELLTYPE := msdos')
-		_p('ifeq (,$(ComSpec)$(COMSPEC))')
-		_p('  SHELLTYPE := posix')
-		_p('endif')
-		_p('ifeq (/bin,$(findstring /bin,$(SHELL)))')
-		_p('  SHELLTYPE := posix')
+		_p('SHELLTYPE := posix')
+		_p('ifeq (.exe,$(findstring .exe,$(ComSpec)))')
+		_p('\tSHELLTYPE := msdos')
 		_p('endif')
 		_p('')
 	end