diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index c5c775adc21b..f931619059d2 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+2014-04-01  Martin Husemann  <martin@duskware.de>
+
+	* config/mips/netbsd.h (TARGET_OS_CPP_BUILTINS): Define __mips_o32
+	for -mabi=32.
+
 2014-04-01  Richard Sandiford  <rdsandiford@googlemail.com>
 
 	PR rtl-optimization/60604
diff --git a/gcc/config/mips/netbsd.h b/gcc/config/mips/netbsd.h
index 0313345fdfc4..efa28869b1bc 100644
--- a/gcc/config/mips/netbsd.h
+++ b/gcc/config/mips/netbsd.h
@@ -32,7 +32,9 @@ along with GCC; see the file COPYING3.  If not see
       if (TARGET_ABICALLS)				\
 	builtin_define ("__ABICALLS__");		\
 							\
-      if (mips_abi == ABI_EABI)				\
+      if (mips_abi == ABI_32)				\
+	builtin_define ("__mips_o32");			\
+      else if (mips_abi == ABI_EABI)			\
 	builtin_define ("__mips_eabi");			\
       else if (mips_abi == ABI_N32)			\
 	builtin_define ("__mips_n32");			\