diff --git a/build-aux/ltmain.in b/build-aux/ltmain.in
index 96b3700347d5..4b8088903740 100644
--- a/build-aux/ltmain.in
+++ b/build-aux/ltmain.in
@@ -960,7 +960,7 @@ func_convert_core_msys_to_w32 ()
   $debug_cmd
 
   # awkward: cmd appends spaces to result
-  func_convert_core_msys_to_w32_result=`( cmd //c echo "$1" ) 2>/dev/null |
+  func_convert_core_msys_to_w32_result=`( cmd /c echo "$1" ) 2>/dev/null |
     $SED -e 's/[ ]*$//' -e "$sed_naive_backslashify"`
 }
 #end: func_convert_core_msys_to_w32