diff --git a/nuttx/configs/sim/README.txt b/nuttx/configs/sim/README.txt
index 39ace5495e..c8bcb2cd7a 100644
--- a/nuttx/configs/sim/README.txt
+++ b/nuttx/configs/sim/README.txt
@@ -215,9 +215,11 @@ cxxtest
      b. Execute 'make menuconfig' in nuttx/ in order to start the
         reconfiguration process.
 
-  3. At present (2012/11/02), this example builds only with exceptions
-     disabled (CONFIG_UCLIBCXX_EXCEPTIONS=n).  And even then, it will
-     not run.
+  3. At present (2012/11/02), exceptions are disabled in this example
+     CONFIG_UCLIBCXX_EXCEPTIONS=n).  It is probably not necessary to
+     disable exceptions.
+
+  4. Unfortunately, this example will not run now.
 
      The reason that the example will not run on the simulator has
      to do with when static constructors are enabled:  In the simulator
diff --git a/nuttx/configs/stm32f4discovery/README.txt b/nuttx/configs/stm32f4discovery/README.txt
index 02fdbb07a0..db423d65b4 100644
--- a/nuttx/configs/stm32f4discovery/README.txt
+++ b/nuttx/configs/stm32f4discovery/README.txt
@@ -1035,8 +1035,7 @@ Where <subdir> is one of the following:
 
        arm-none-eabi-ar.exe rcs libsupc++.a vterminate.o
         
-  4. At present (2012/11/02), this example builds only with exceptions
-     disabled (CONFIG_UCLIBCXX_EXCEPTIONS=n).
+  4. Exceptions are enabled and workking (CONFIG_UCLIBCXX_EXCEPTIONS=y)
 
   elf:
   ---
diff --git a/nuttx/configs/stm32f4discovery/cxxtest/defconfig b/nuttx/configs/stm32f4discovery/cxxtest/defconfig
index 85b04c0ff9..6648d3b132 100644
--- a/nuttx/configs/stm32f4discovery/cxxtest/defconfig
+++ b/nuttx/configs/stm32f4discovery/cxxtest/defconfig
@@ -73,6 +73,8 @@ CONFIG_ARCH_CHIP_STM32=y
 CONFIG_ARCH_CORTEXM4=y
 CONFIG_ARCH_FAMILY="armv7-m"
 CONFIG_ARCH_CHIP="stm32"
+CONFIG_ARCH_HAVE_CMNVECTOR=y
+# CONFIG_ARMV7M_CMNVECTOR is not set
 # CONFIG_ARCH_FPU is not set
 CONFIG_ARCH_HAVE_MPU=y
 # CONFIG_ARMV7M_MPU is not set
@@ -414,7 +416,7 @@ CONFIG_HAVE_CXXINITIALIZE=y
 # uClibc++ Standard C++ Library
 #
 CONFIG_UCLIBCXX=y
-# CONFIG_UCLIBCXX_EXCEPTION is not set
+CONFIG_UCLIBCXX_EXCEPTION=y
 CONFIG_UCLIBCXX_IOSTREAM_BUFSIZE=32
 CONFIG_UCLIBCXX_HAVE_LIBSUPCXX=y