diff --git a/shell-integration/fish/vendor_completions.d/clone-in-kitty.fish b/shell-integration/fish/vendor_completions.d/clone-in-kitty.fish
index 168708df8..37fe1b97e 100644
--- a/shell-integration/fish/vendor_completions.d/clone-in-kitty.fish
+++ b/shell-integration/fish/vendor_completions.d/clone-in-kitty.fish
@@ -1,7 +1,7 @@
 function __ksi_completions
     set --local ct (commandline --current-token)
     set --local tokens (commandline --tokenize --cut-at-cursor --current-process)
-    printf "%s\n" $tokens $ct | command kitty-tool __complete__ fish
+    printf "%s\n" $tokens $ct | command kitty-tool __complete__ fish | source -
 end
 
 complete -f -c clone-in-kitty -a "(__ksi_completions)"
diff --git a/shell-integration/fish/vendor_completions.d/edit-in-kitty.fish b/shell-integration/fish/vendor_completions.d/edit-in-kitty.fish
index eac30a1ca..e4f0e4189 100644
--- a/shell-integration/fish/vendor_completions.d/edit-in-kitty.fish
+++ b/shell-integration/fish/vendor_completions.d/edit-in-kitty.fish
@@ -1,7 +1,7 @@
 function __ksi_completions
     set --local ct (commandline --current-token)
     set --local tokens (commandline --tokenize --cut-at-cursor --current-process)
-    printf "%s\n" $tokens $ct | command kitty-tool __complete__ fish
+    printf "%s\n" $tokens $ct | command kitty-tool __complete__ fish | source -
 end
 
 complete -f -c edit-in-kitty -a "(__ksi_completions)"
diff --git a/shell-integration/fish/vendor_completions.d/kitty-tool.fish b/shell-integration/fish/vendor_completions.d/kitty-tool.fish
index a88b0169c..4ba8d1ac8 100644
--- a/shell-integration/fish/vendor_completions.d/kitty-tool.fish
+++ b/shell-integration/fish/vendor_completions.d/kitty-tool.fish
@@ -1,7 +1,7 @@
 function __ksi_completions
     set --local ct (commandline --current-token)
     set --local tokens (commandline --tokenize --cut-at-cursor --current-process)
-    printf "%s\n" $tokens $ct | command kitty-tool __complete__ fish
+    printf "%s\n" $tokens $ct | command kitty-tool __complete__ fish | source -
 end
 
 complete -f -c kitty-tool -a "(__ksi_completions)"