diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 19830ba..c2d1e2f 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -20,7 +20,7 @@ jobs:
           - { name: linux-x64,   os: ubuntu-22.04,     flags: -GNinja, target_apt_arch: ":amd64" }
           - { name: linux-x86,   os: ubuntu-22.04,     flags: -GNinja -DCMAKE_C_FLAGS=-m32 -DCMAKE_CXX_FLAGS=-m32 -DWAVPACK_ENABLE_ASM=OFF, target_apt_arch: ":i386" }
           - { name: linux-arm64, os: ubuntu-22.04-arm, flags: -GNinja, target_apt_arch: ":arm64", container: "arm64v8/ubuntu:22.04" }
-          - { name: linux-arm,   os: ubuntu-22.04-arm, flags: -GNinja -DCMAKE_C_FLAGS=-mfpu=neon -DCMAKE_CXX_FLAGS=-mfpu=neon, target_apt_arch: ":armhf", container: "arm32v7/ubuntu:22.04" }
+          - { name: linux-arm,   os: ubuntu-22.04-arm, flags: \"-GNinja -DCMAKE_C_FLAGS=-mfpu=neon -DCMAKE_CXX_FLAGS=-mfpu=neon\", target_apt_arch: ":armhf", container: "arm32v7/ubuntu:22.04" }
           - { name: osx-x64,     os: macos-13,     flags: -DCMAKE_OSX_ARCHITECTURES=x86_64 -DCMAKE_OSX_DEPLOYMENT_TARGET=10.14 }
           # NOTE: macOS 11.0 is the first released supported by Apple Silicon.
           - { name: osx-arm64,   os: macos-latest,     flags: -DCMAKE_OSX_ARCHITECTURES=arm64 -DCMAKE_OSX_DEPLOYMENT_TARGET=11.0 }