diff -up ark-4.9.97/plugins/libarchive/CMakeLists.txt.x-source-rpm ark-4.9.97/plugins/libarchive/CMakeLists.txt
--- ark-4.9.97/plugins/libarchive/CMakeLists.txt.x-source-rpm	2012-12-17 09:07:06.000000000 -0600
+++ ark-4.9.97/plugins/libarchive/CMakeLists.txt	2013-01-05 13:12:05.226847187 -0600
@@ -4,7 +4,7 @@ include_directories(${LIBARCHIVE_INCLUDE
 set(SUPPORTED_LIBARCHIVE_READONLY_MIMETYPES "application/x-deb;application/x-cd-image;application/x-bcpio;application/x-cpio;application/x-cpio-compressed;application/x-sv4cpio;application/x-sv4crc;")
 set(SUPPORTED_LIBARCHIVE_READWRITE_MIMETYPES "application/x-tar;application/x-compressed-tar;application/x-bzip-compressed-tar;application/x-tarz;application/x-xz-compressed-tar;application/x-lzma-compressed-tar;")
 if(HAVE_LIBARCHIVE_RPM_SUPPORT)
-  set(SUPPORTED_LIBARCHIVE_READONLY_MIMETYPES "${SUPPORTED_LIBARCHIVE_READONLY_MIMETYPES}application/x-rpm;")
+  set(SUPPORTED_LIBARCHIVE_READONLY_MIMETYPES "${SUPPORTED_LIBARCHIVE_READONLY_MIMETYPES}application/x-rpm;application/x-source-rpm;")
 endif(HAVE_LIBARCHIVE_RPM_SUPPORT)
 if(HAVE_LIBARCHIVE_CAB_SUPPORT)
   set(SUPPORTED_LIBARCHIVE_READONLY_MIMETYPES "${SUPPORTED_LIBARCHIVE_READONLY_MIMETYPES}application/vnd.ms-cab-compressed;")