diff --git a/checkin_notes b/checkin_notes
index 40f617a064..b1d6499bdc 100644
--- a/checkin_notes
+++ b/checkin_notes
@@ -4764,3 +4764,11 @@ Charlie 8 Aug 2011
         PostInstall.cpp
         PTP-ReadMe.rtf
         ReadMe.rtf
+
+Charlie 8 Aug 2011
+    - Mac Client: Call NSVersionOfRunTimeLibrary("cuda") to set 
+        cc.display_driver_version (from Oliver Bock.)
+        
+    client/
+        coproc_detect.cpp
+    
\ No newline at end of file
diff --git a/client/coproc_detect.cpp b/client/coproc_detect.cpp
index 108c0d3003..ee718a7f4a 100644
--- a/client/coproc_detect.cpp
+++ b/client/coproc_detect.cpp
@@ -29,6 +29,7 @@
 #ifdef __APPLE__
 // Suppress obsolete warning when building for OS 10.3.9
 #define DLOPEN_NO_WARN
+#include <mach-o/dyld.h>
 #endif
 #include "config.h"
 #include <dlfcn.h>
@@ -863,6 +864,8 @@ void COPROC_NVIDIA::get(
         if (cc.prop.major > 100) continue;  // e.g. 9999 is an error
 #if defined(_WIN32) && !defined(SIM)
         cc.display_driver_version = Version.drvVersion;
+#elif defined(__APPLE__)
+        cc.display_driver_version = NSVersionOfRunTimeLibrary("cuda");
 #else
         cc.display_driver_version = 0;
 #endif