diff --git a/src/init/omp.bash b/src/init/omp.bash
index 5fa20519..a148331a 100644
--- a/src/init/omp.bash
+++ b/src/init/omp.bash
@@ -12,7 +12,7 @@ function _update_ps1() {
         omp_elapsed=$(($omp_now-$omp_start_time))
         rm $TIMER_START
     fi
-    PS1="$(::OMP:: --config $POSH_THEME --error $? --execution-time $omp_elapsed)"
+    PS1="$(::OMP:: --config $POSH_THEME --error $? --execution-time $omp_elapsed --shell bash)"
 }
 
 if [ "$TERM" != "linux" ] && [ -x "$(command -v ::OMP::)" ]; then
diff --git a/src/init/omp.fish b/src/init/omp.fish
index a188f0f3..5be42360 100644
--- a/src/init/omp.fish
+++ b/src/init/omp.fish
@@ -1,4 +1,4 @@
 function fish_prompt
     set -l omp_duration "$CMD_DURATION$cmd_duration"
-    ::OMP:: --config ::CONFIG:: --error $status --execution-time $omp_duration
+    ::OMP:: --config ::CONFIG:: --error $status --execution-time $omp_duration --shell fish
 end
diff --git a/src/init/omp.zsh b/src/init/omp.zsh
index e30b9fe3..c869a94b 100644
--- a/src/init/omp.zsh
+++ b/src/init/omp.zsh
@@ -11,7 +11,7 @@ function omp_precmd() {
     omp_now=$(::OMP:: --millis)
     omp_elapsed=$(($omp_now-$omp_start_time))
   fi
-  eval "$(::OMP:: --config $POSH_THEME --error $omp_last_error --execution-time $omp_elapsed --eval)"
+  eval "$(::OMP:: --config $POSH_THEME --error $omp_last_error --execution-time $omp_elapsed --eval --shell zsh)"
   unset omp_start_time
   unset omp_now
   unset omp_elapsed