diff --git a/.github/workflows/linux-old.yml b/.github/workflows/linux-old.yml
index 08d1d039b9..45f4234008 100644
--- a/.github/workflows/linux-old.yml
+++ b/.github/workflows/linux-old.yml
@@ -158,7 +158,7 @@ jobs:
         run: |
           mkdir bld-am
           cd bld-am
-          ../configure --disable-dependency-tracking --enable-unity --enable-warnings --enable-werror --disable-shared \
+          ../configure --disable-dependency-tracking --enable-option-checking=fatal --enable-unity --enable-warnings --enable-werror --disable-shared \
             --without-ssl --enable-ares --without-libssh2 --with-zstd --with-gssapi --with-librtmp \
             --prefix="$PWD"/../curl-install-am
 
diff --git a/.github/workflows/non-native.yml b/.github/workflows/non-native.yml
index 69c303eea4..3d0bb3410e 100644
--- a/.github/workflows/non-native.yml
+++ b/.github/workflows/non-native.yml
@@ -388,7 +388,7 @@ jobs:
               -DWATT_ROOT="$HOME/djgpp/net/watt"
           else
             autoreconf -fi
-            mkdir bld && cd bld && ../configure --disable-dependency-tracking --enable-unity --enable-warnings --enable-werror --disable-shared \
+            mkdir bld && cd bld && ../configure --disable-dependency-tracking --enable-option-checking=fatal --enable-unity --enable-warnings --enable-werror --disable-shared \
               CC="$HOME/djgpp/bin/i586-pc-msdosdjgpp-gcc" \
               AR="$HOME/djgpp/bin/i586-pc-msdosdjgpp-ar" \
               RANLIB="$HOME/djgpp/bin/i586-pc-msdosdjgpp-ranlib" \