diff --git a/testsuite/install.00-init/040-subshell.exp b/testsuite/install.00-init/040-subshell.exp
index 9be05990..758bcf8d 100644
--- a/testsuite/install.00-init/040-subshell.exp
+++ b/testsuite/install.00-init/040-subshell.exp
@@ -33,8 +33,8 @@ if {$tcl_platform(os) eq "SunOS"} {
    set csh_nf $tcsh_nf
    set csh_nf_ml $tcsh_nf_ml
 }
-set fish_nf "fish: Unknown command '?module"
-set fish_nf_ml "fish: Unknown command '?ml"
+set fish_nf "fish: Unknown command:? '?module"
+set fish_nf_ml "fish: Unknown command:? '?ml"
 if {$tcl_platform(os) eq "SunOS"} {
    set sh_nf "module: not found \\\[No such file or directory\\\]"
    set sh_nf_ml "ml: not found \\\[No such file or directory\\\]"