diff --git a/.github/workflows/opensslcoexist.yml b/.github/workflows/opensslcoexist.yml
index 7bc006d05b..e6ff993bdb 100644
--- a/.github/workflows/opensslcoexist.yml
+++ b/.github/workflows/opensslcoexist.yml
@@ -19,7 +19,7 @@ jobs:
         config: [
           # Add new configs here
           '--verbose --enable-all --disable-all-osp --disable-opensslall --enable-opensslcoexist CPPFLAGS="-DNO_WOLFSSL_CIPHER_SUITE_TEST -pedantic -Wdeclaration-after-statement -Wnull-dereference -DTEST_LIBWOLFSSL_SOURCES_INCLUSION_SEQUENCE"',
-          '--verbose --enable-all --disable-all-osp --disable-opensslall --enable-opensslcoexist CPPFLAGS="-DNO_WOLFSSL_CIPHER_SUITE_TEST -pedantic -DTEST_OPENSSL_COEXIST -Wdeclaration-after-statement -DTEST_LIBWOLFSSL_SOURCES_INCLUSION_SEQUENCE"'
+          '--verbose --enable-all --disable-all-osp --disable-opensslall --enable-opensslcoexist CPPFLAGS="-DNO_WOLFSSL_CIPHER_SUITE_TEST -pedantic -Wdeclaration-after-statement -Wnull-dereference -DTEST_OPENSSL_COEXIST -DTEST_LIBWOLFSSL_SOURCES_INCLUSION_SEQUENCE"'
         ]
     name: make check
     if: github.repository_owner == 'wolfssl'
diff --git a/.github/workflows/os-check.yml b/.github/workflows/os-check.yml
index 871d239a3b..b7c7264b25 100644
--- a/.github/workflows/os-check.yml
+++ b/.github/workflows/os-check.yml
@@ -99,7 +99,7 @@ jobs:
       - name: Build and test wolfSSL
         uses: wolfSSL/actions-build-autotools-project@v1
         with:
-          configure: CFLAGS="-pedantic -Wno-overlength-strings -Wdeclaration-after-statement -DTEST_LIBWOLFSSL_SOURCES_INCLUSION_SEQUENCE" ${{ matrix.config }}
+          configure: CFLAGS="-pedantic -Wdeclaration-after-statement -Wnull-dereference -Wno-overlength-strings -DTEST_LIBWOLFSSL_SOURCES_INCLUSION_SEQUENCE" ${{ matrix.config }}
           check: true
 
   # Platform-agnostic configs: pure crypto algorithms, preprocessor guards,
@@ -139,7 +139,7 @@ jobs:
       - name: Build and test wolfSSL
         uses: wolfSSL/actions-build-autotools-project@v1
         with:
-          configure: CFLAGS="-pedantic -Wno-overlength-strings -Wdeclaration-after-statement -DTEST_LIBWOLFSSL_SOURCES_INCLUSION_SEQUENCE" ${{ matrix.config }}
+          configure: CFLAGS="-pedantic -Wdeclaration-after-statement -Wnull-dereference -Wno-overlength-strings -DTEST_LIBWOLFSSL_SOURCES_INCLUSION_SEQUENCE" ${{ matrix.config }}
           check: true
 
   make_user_settings: