diff --git a/autobuild.xml b/autobuild.xml
index ab98824d56..b5c4894841 100644
--- a/autobuild.xml
+++ b/autobuild.xml
@@ -1016,9 +1016,9 @@
             <key>archive</key>
             <map>
               <key>hash</key>
-              <string>adeeca61be1b8f47ce85660c8c20a904</string>
+              <string>0681ab7e1988dfdbdad7dd9edb7760ee</string>
               <key>url</key>
-              <string>http://s3.amazonaws.com/viewer-source-downloads/install_pkgs/libpng-1.2.35-linux-20100929.tar.bz2</string>
+              <string>http://automated-builds-secondlife-com.s3.amazonaws.com/hg/repo/3p-libpng/rev/221851/arch/Linux/installer/libpng-1.5.1-linux-20110223.tar.bz2</string>
             </map>
             <key>name</key>
             <string>linux</string>
diff --git a/indra/cmake/PNG.cmake b/indra/cmake/PNG.cmake
index 60f749869a..913c575672 100644
--- a/indra/cmake/PNG.cmake
+++ b/indra/cmake/PNG.cmake
@@ -15,7 +15,7 @@ else (STANDALONE)
     set(PNG_LIBRARIES png15)
     set(PNG_INCLUDE_DIRS ${LIBS_PREBUILT_DIR}/include/libpng15)
   else()
-    set(PNG_LIBRARIES png12)
-    set(PNG_INCLUDE_DIRS ${LIBS_PREBUILT_DIR}/include/libpng12)
+    set(PNG_LIBRARIES png15)
+    set(PNG_INCLUDE_DIRS ${LIBS_PREBUILT_DIR}/include/libpng15)
   endif()
 endif (STANDALONE)