diff --git a/.github/workflows/valgrind.yml b/.github/workflows/valgrind.yml
index a6f9adcee..ce9c2b244 100644
--- a/.github/workflows/valgrind.yml
+++ b/.github/workflows/valgrind.yml
@@ -42,7 +42,7 @@ jobs:
                 /bin/sh ./autogen.sh
                 mkdir build
                 cd build
-                ../configure --srcdir=`dirname "$PWD"` --enable-maintainer-mode --enable-developer --with-ldap $CONFIGURE_OPTS --prefix=$HOME/inst CFLAGS="-Wno-error=shadow -Wno-error=bad-function-cast -Wno-error=unused-function -Wno-error=unused-result -Wno-error=deprecated-declarations"
+                ../configure --srcdir=`dirname "$PWD"` --enable-maintainer-mode --enable-developer --with-ldap $CONFIGURE_OPTS --prefix=$HOME/inst CFLAGS="-g -ggdb3 -O0 -Wno-error=shadow -Wno-error=bad-function-cast -Wno-error=unused-function -Wno-error=unused-result -Wno-error=deprecated-declarations"
                 make -j4
             - name: Test
               env: