diff --git a/.github/workflows/http3-linux.yml b/.github/workflows/http3-linux.yml
index a95a11316e..c766ce94f8 100644
--- a/.github/workflows/http3-linux.yml
+++ b/.github/workflows/http3-linux.yml
@@ -789,7 +789,7 @@ jobs:
           if [ "${MATRIX_BUILD}" = 'cmake' ]; then
             [[ "${MATRIX_GENERATE}" = *'boringssl'* ]] && options=" -DBORINGSSL_VERSION=${BORINGSSL_VERSION}"
             cmake -B bld -G Ninja \
-              -DCMAKE_C_COMPILER_TARGET="$(uname -m)-linux-gnu" -DBUILD_STATIC_LIBS=ON \
+              -DCMAKE_C_COMPILER_TARGET="$(uname -m)-unknown-linux-gnu" -DBUILD_STATIC_LIBS=ON \
               -DCURL_WERROR=ON -DENABLE_DEBUG=ON \
               -DCURL_USE_LIBUV=ON -DCURL_ENABLE_NTLM=ON \
               -DTEST_NGHTTPX=/home/runner/nghttp2/build/bin/nghttpx \
diff --git a/.github/workflows/linux.yml b/.github/workflows/linux.yml
index 6b520ec41f..1d0043c29f 100644
--- a/.github/workflows/linux.yml
+++ b/.github/workflows/linux.yml
@@ -866,7 +866,7 @@ jobs:
           if [ "${MATRIX_BUILD}" = 'cmake' ]; then
             cmake -B bld -G Ninja \
               -DCMAKE_INSTALL_PREFIX="$HOME"/curl-install \
-              -DCMAKE_C_COMPILER_TARGET="$(uname -m)-linux-gnu" -DBUILD_STATIC_LIBS=ON \
+              -DCMAKE_C_COMPILER_TARGET="$(uname -m)-unknown-linux-gnu" -DBUILD_STATIC_LIBS=ON \
               -DCMAKE_UNITY_BUILD=ON -DCURL_WERROR=ON \
               ${MATRIX_GENERATE}
           else