diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 688ffd63376..74d80c418a8 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,7 @@
+2007-03-02  Richard Sandiford  <richard@codesourcery.com>
+
+	* config/t-vxworks (LIMITS_H_TEST): Define to true for VxWorks.
+
 2007-03-02  Richard Sandiford  <richard@codesourcery.com>
 
 	* config/t-vxworks (LIBGCC2_INCLUDES): Pass -nostdinc.
diff --git a/gcc/config/t-vxworks b/gcc/config/t-vxworks
index f6235035704..3741581d3a7 100644
--- a/gcc/config/t-vxworks
+++ b/gcc/config/t-vxworks
@@ -27,6 +27,9 @@ LIBGCC2_INCLUDES = -nostdinc -I \
      *) echo $(WIND_BASE)/target/h ;; \
    esac`
 
+# Both the kernel and RTP headers provide limits.h.
+LIMITS_H_TEST = true
+
 EXTRA_MULTILIB_PARTS = 
 
 vxworks.o: $(srcdir)/config/vxworks.c $(CONFIG_H) $(SYSTEM_H) coretypes.h \