diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index a54394910..c77090cd8 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -84,9 +84,9 @@ jobs:
       - id: find-targets
         run: |
           {
-            for base in $(echo ${{ needs.find-updated-bases.outputs.targets }} | jq -r '.[]'); do
+            for base in $(echo '${{ needs.find-updated-bases.outputs.targets }}' | jq -r '.[]'); do
               base=$(echo $base | sed 's/-base//')
-              ls $base-*
+              find $base-* -maxdepth 0 -type d
             done
           } > /tmp/updated-benchmarks.txt
           git diff --name-only --diff-filter=ACMR HEAD^ HEAD | grep -e "^OCaml/" -e "^Java/" -e "^C/" -e "^Solidity/" | cut -d '/' -f 1-2 | sort | uniq >> /tmp/updated-benchmarks.txt
diff --git a/C-base/flex/Dockerfile b/C-base/flex/Dockerfile
index 399d35906..69625bf7d 100644
--- a/C-base/flex/Dockerfile
+++ b/C-base/flex/Dockerfile
@@ -23,3 +23,4 @@ RUN git clone https://github.com/westes/flex.git buggy \
     && git checkout d3de49f84224b18c5287653f20525291b24cc26e \
     && ./autogen.sh \
     && ./configure
+
diff --git a/C-base/snort/Dockerfile b/C-base/snort/Dockerfile
index 569967f75..db1d111be 100644
--- a/C-base/snort/Dockerfile
+++ b/C-base/snort/Dockerfile
@@ -33,3 +33,4 @@ RUN mkdir -p buggy \
     && mv /tmp/src/util.h /workspace/buggy/src/util.h \
     && cd buggy \
     && ./configure
+