diff --git a/helpers/utils b/helpers/utils
index 6b069a021..489c5c261 100644
--- a/helpers/utils
+++ b/helpers/utils
@@ -271,9 +271,9 @@ ynh_setup_source() {
         if ! echo "${src_sum} ${src_filename}" | ${src_sumprg} --check --status
         then
             local actual_sum="$(${src_sumprg} ${src_filename} | cut --delimiter=' ' --fields=1)"
-            local actual_size="$(du -hs ${src_filename} | cut --delimiter=' ' --fields=1)"
+            local actual_size="$(du -hs ${src_filename} | cut --fields=1)"
             rm -f ${src_filename}
-            ynh_die --message="Corrupt source for ${src_filename}: Expected ${src_sum} but got ${actual_sum} (size: ${actual_size})."
+            ynh_die --message="Corrupt source for ${src_url}: Expected sha256sum to be ${src_sum} but got ${actual_sum} (size: ${actual_size})."
         fi
     fi
 
diff --git a/src/utils/resources.py b/src/utils/resources.py
index 8e775e109..9891fe9c6 100644
--- a/src/utils/resources.py
+++ b/src/utils/resources.py
@@ -294,9 +294,9 @@ class SourcesResource(AppResource):
         armhf.sha256 = "4355a46b19d348dc2f57c046f8ef63d4538ebb936000f3c9ee954a27460dd865"
 
         autoupdate.strategy = "latest_github_release"
-        autoupdate.asset.amd64 = ".*\.amd64.tar.gz"
-        autoupdate.asset.i386 = ".*\.386.tar.gz"
-        autoupdate.asset.armhf = ".*\.arm.tar.gz"
+        autoupdate.asset.amd64 = ".*\\.amd64.tar.gz"
+        autoupdate.asset.i386 = ".*\\.386.tar.gz"
+        autoupdate.asset.armhf = ".*\\.arm.tar.gz"
 
         [resources.sources.zblerg]
         url = "https://zblerg.com/download/zblerg"