diff --git a/configs/stm3210e-eval/nsh2/defconfig b/configs/stm3210e-eval/nsh2/defconfig
index 7d0ae8eb3ec..0a6bc8ab332 100644
--- a/configs/stm3210e-eval/nsh2/defconfig
+++ b/configs/stm3210e-eval/nsh2/defconfig
@@ -1102,6 +1102,8 @@ CONFIG_EXAMPLES_NXIMAGE_EXTERNINIT=n
 #  CONFIG_EXAMPLES_USBSTRG_DEVMINOR3 and CONFIG_EXAMPLES_USBSTRG_DEVPATH3
 #    Similar parameters that would have to be provided if CONFIG_EXAMPLES_USBSTRG_NLUNS
 #    is 3.  No defaults.
+#  CONFIG_EXAMPLES_USBSTRG_DEBUGMM
+#    Enables some debug tests to check for memory usage and memory leaks.
 #
 #  If CONFIG_USBDEV_TRACE is enabled (or CONFIG_DEBUG and CONFIG_DEBUG_USB), then
 #  the example code will also manage the USB trace output.  The amount of trace output
@@ -1122,6 +1124,7 @@ CONFIG_EXAMPLES_USBSTRG_BUILTIN=y
 CONFIG_EXAMPLES_USBSTRG_NLUNS=1
 CONFIG_EXAMPLES_USBSTRG_DEVMINOR1=0
 CONFIG_EXAMPLES_USBSTRG_DEVPATH1="/dev/mmcsd0"
+CONFIG_EXAMPLES_USBSTRG_DEBUGMM=n
 CONFIG_EXAMPLES_USBSTRG_TRACEINIT=n
 CONFIG_EXAMPLES_USBSTRG_TRACECLASS=n
 CONFIG_EXAMPLES_USBSTRG_TRACETRANSFERS=n
diff --git a/configs/stm3210e-eval/usbstorage/defconfig b/configs/stm3210e-eval/usbstorage/defconfig
index a560b9a7b80..da24167c74b 100755
--- a/configs/stm3210e-eval/usbstorage/defconfig
+++ b/configs/stm3210e-eval/usbstorage/defconfig
@@ -858,6 +858,8 @@ CONFIG_EXAMPLES_USBSERIAL_TRACEINTERRUPTS=n
 #  CONFIG_EXAMPLES_USBSTRG_DEVMINOR3 and CONFIG_EXAMPLES_USBSTRG_DEVPATH3
 #    Similar parameters that would have to be provided if CONFIG_EXAMPLES_USBSTRG_NLUNS
 #    is 3.  No defaults.
+#  CONFIG_EXAMPLES_USBSTRG_DEBUGMM
+#    Enables some debug tests to check for memory usage and memory leaks.
 #
 #  If CONFIG_USBDEV_TRACE is enabled (or CONFIG_DEBUG and CONFIG_DEBUG_USB), then
 #  the example code will also manage the USB trace output.  The amount of trace output
@@ -878,6 +880,7 @@ CONFIG_EXAMPLES_USBSTRG_BUILTIN=n
 CONFIG_EXAMPLES_USBSTRG_NLUNS=1
 CONFIG_EXAMPLES_USBSTRG_DEVMINOR1=0
 CONFIG_EXAMPLES_USBSTRG_DEVPATH1="/dev/mmcsd0"
+CONFIG_EXAMPLES_USBSTRG_DEBUGMM=n
 CONFIG_EXAMPLES_USBSTRG_TRACEINIT=n
 CONFIG_EXAMPLES_USBSTRG_TRACECLASS=n
 CONFIG_EXAMPLES_USBSTRG_TRACETRANSFERS=n