diff --git a/package/libmdbx/libmdbx.mk b/package/libmdbx/libmdbx.mk
index 878ea87c07..370df2eaa3 100644
--- a/package/libmdbx/libmdbx.mk
+++ b/package/libmdbx/libmdbx.mk
@@ -14,7 +14,10 @@ LIBMDBX_REDISTRIBUTE = YES
 LIBMDBX_STRIP_COMPONENTS = 0
 LIBMDBX_INSTALL_STAGING = YES
 
+# Set CMAKE_BUILD_TYPE to Release to remove -Werror and avoid a build failure
+# with glibc < 2.12
 LIBMDBX_CONF_OPTS = \
+	-DCMAKE_BUILD_TYPE=Release \
 	-DMDBX_INSTALL_MANPAGES=OFF \
 	-DBUILD_FOR_NATIVE_CPU=OFF \
 	-DMDBX_BUILD_CXX=$(if $(BR2_PACKAGE_LIBMDBX_CXX),ON,OFF) \