diff --git a/bin/restic_backup.sh b/bin/restic_backup.sh
index 976f32c..d84d742 100644
--- a/bin/restic_backup.sh
+++ b/bin/restic_backup.sh
@@ -28,7 +28,7 @@ assert_envvars() {
 	local varnames=("$@")
 	for varname in "${varnames[@]}"; do
 		if [ -z ${!varname+x} ]; then
-			printf "%s must be set for this script to work.\n\nDid you forget to source a /etc/restic/*.env.sh profile in the current shell before executing this script?\n" "$varname" >&2
+			printf "%s must be set for this script to work.\n\nDid you forget to source a $INSTALL_PREFIX/etc/restic/*.env.sh profile in the current shell before executing this script?\n" "$varname" >&2
 			exit 1
 		fi
 	done
diff --git a/bin/restic_check.sh b/bin/restic_check.sh
index 6d72ee9..728e5fd 100644
--- a/bin/restic_check.sh
+++ b/bin/restic_check.sh
@@ -20,7 +20,7 @@ assert_envvars() {
 	local varnames=("$@")
 	for varname in "${varnames[@]}"; do
 		if [ -z ${!varname+x} ]; then
-			printf "%s must be set for this script to work.\n\nDid you forget to source a /etc/restic/*.env.sh profile in the current shell before executing this script?\n" "$varname" >&2
+			printf "%s must be set for this script to work.\n\nDid you forget to source a $INSTALL_PREFIX/etc/restic/*.env.sh profile in the current shell before executing this script?\n" "$varname" >&2
 			exit 1
 		fi
 	done