diff --git a/src/shell/scripts/omp.fish b/src/shell/scripts/omp.fish
index 477cb8fb..68045d3b 100644
--- a/src/shell/scripts/omp.fish
+++ b/src/shell/scripts/omp.fish
@@ -1,4 +1,4 @@
-set --global POSH_THEME "::CONFIG::"
+set --export POSH_THEME "::CONFIG::"
 set --global POWERLINE_COMMAND "oh-my-posh"
 set --global CONDA_PROMPT_MODIFIER false
 set --global omp_tooltip_command ""