diff --git a/.ci/build.sh b/.ci/build.sh
index a791521f5..493f42789 100644
--- a/.ci/build.sh
+++ b/.ci/build.sh
@@ -298,6 +298,9 @@ EOF
 
 	# Link against the system libslirp instead of compiling ours.
 	cmake_flags_extra="$cmake_flags_extra -D SLIRP_EXTERNAL=ON"
+
+	# Use OpenAL for Linux builds before FAudio builds are set up.
+	cmake_flags_extra="$cmake_flags_extra -D OPENAL=ON"
 fi
 
 # Clean workspace.