diff --git a/Dockerfile_no_qr_reader b/Dockerfile_no_qr_reader
index c1a2cc0..6e32931 100644
--- a/Dockerfile_no_qr_reader
+++ b/Dockerfile_no_qr_reader
@@ -8,7 +8,7 @@ ARG run_tests=true
 ARG TARGETPLATFORM
 
 RUN apk add nano \
-    && if [[ "$TARGETPLATFORM" == "linux/arm64" ]]; then apk add zlib-dev jpeg-dev; fi \
+    && if [[ "$TARGETARCH" == "arm64" ]]; then apk add zlib-dev jpeg-dev; fi \
     && pip install protobuf qrcode Pillow \
     && if [[ "$run_tests" == "true" ]]; then /extract/run_pytest.sh test_extract_otp_secret_keys_pytest.py -k "not qreader" --relaxed; else echo "Not running tests..."; fi