diff --git a/builds/android/build.sh b/builds/android/build.sh
index 3c7c8711..b35be86a 100755
--- a/builds/android/build.sh
+++ b/builds/android/build.sh
@@ -1,5 +1,7 @@
 #!/usr/bin/env bash
 
+set -e
+
 function usage {
     echo "Usage ./build.sh [ arm | arm64 | x86 | x86_64 ]"
 }
@@ -86,7 +88,7 @@ LIBTOOL_EXTRA_LDFLAGS='-avoid-version'
 
 (android_build_verify_so ${VERIFY} &> /dev/null) || {
     rm -rf "${cache}/libzmq"
-    (cp -r ../.. "${cache}/libzmq" && cd "${cache}/libzmq" && make clean)
+    (cp -r ../.. "${cache}/libzmq" && cd "${cache}/libzmq" && ( make clean || : ))
 
     (cd "${cache}/libzmq" && ./autogen.sh \
         && ./configure --quiet "${ANDROID_BUILD_OPTS[@]}" ${CURVE} --without-docs \
diff --git a/builds/android/ci_build.sh b/builds/android/ci_build.sh
index 8769dacf..14c11b81 100755
--- a/builds/android/ci_build.sh
+++ b/builds/android/ci_build.sh
@@ -1,8 +1,15 @@
 #!/usr/bin/env bash
+#
+#   Exit if any step fails
+set -e
 
 export NDK_VERSION=android-ndk-r25
 export ANDROID_NDK_ROOT="/tmp/${NDK_VERSION}"
 
+# Cleanup.
+rm -rf /tmp/tmp-deps
+mkdir -p /tmp/tmp-deps
+
 case $(uname | tr '[:upper:]' '[:lower:]') in
   linux*)
     HOST_PLATFORM=linux