diff --git a/scripts/on_env_start.sh b/scripts/on_env_start.sh
index 145abd3a..044f9124 100755
--- a/scripts/on_env_start.sh
+++ b/scripts/on_env_start.sh
@@ -1,3 +1,5 @@
+#!/bin/bash
+
 printf "\n\nStable Diffusion UI\n\n"
 
 if [ -f "scripts/install_status.txt" ] && [ `grep -c sd_ui_git_cloned scripts/install_status.txt` -gt "0" ]; then
diff --git a/scripts/on_sd_start.sh b/scripts/on_sd_start.sh
index 200d7f20..fdd2ff70 100755
--- a/scripts/on_sd_start.sh
+++ b/scripts/on_sd_start.sh
@@ -1,3 +1,5 @@
+#!/bin/bash
+
 cp sd-ui-files/scripts/on_env_start.sh scripts/
 
 source installer/etc/profile.d/conda.sh
diff --git a/scripts/post_activate.sh b/scripts/post_activate.sh
index 4f0921d2..ec715af0 100755
--- a/scripts/post_activate.sh
+++ b/scripts/post_activate.sh
@@ -1,3 +1,5 @@
+#!/bin/bash
+
 conda-unpack
 
 source $CONDA_PREFIX/etc/profile.d/conda.sh
diff --git a/scripts/start.sh b/scripts/start.sh
index 407796a6..d6c75ad8 100644
--- a/scripts/start.sh
+++ b/scripts/start.sh
@@ -1,3 +1,5 @@
+#!/bin/bash
+
 source installer/bin/activate
 
 conda-unpack