diff --git a/libstdc++-v3/ChangeLog b/libstdc++-v3/ChangeLog
index 20367fb7dd1..4ae0797e510 100644
--- a/libstdc++-v3/ChangeLog
+++ b/libstdc++-v3/ChangeLog
@@ -1,3 +1,8 @@
+2002-01-09  Bo Thorsen  <bo@suse.co.uk>
+
+	* config/cpu/x86-64/bits/cpu_limits.h (__glibcpp_long_bits): Add
+	definition.
+
 2002-01-08  Benjamin Kosnik  <bkoz@redhat.com>
 
         libstdc++/2913
diff --git a/libstdc++-v3/config/cpu/x86-64/bits/cpu_limits.h b/libstdc++-v3/config/cpu/x86-64/bits/cpu_limits.h
index be304e2d805..7de187e2080 100644
--- a/libstdc++-v3/config/cpu/x86-64/bits/cpu_limits.h
+++ b/libstdc++-v3/config/cpu/x86-64/bits/cpu_limits.h
@@ -28,6 +28,8 @@
 #ifndef _GLIBCPP_CPU_LIMITS
 #define _GLIBCPP_CPU_LIMITS 1
 
+#define __glibcpp_long_bits 64
+
 #define __glibcpp_long_double_bits 80
 
 #endif