diff --git a/umdk.spec b/umdk.spec
index 6943f49e42920d89386827e59df0fa4f41d2526b..fcabb173de9033e8a8b8061299a4e433b06ede76 100644
--- a/umdk.spec
+++ b/umdk.spec
@@ -40,9 +40,13 @@
 %if %{defined kernel_version}
     %define kernel_build_path /lib/modules/%{kernel_version}/build
 %else
-    %define kernel_version %( \
-        rpm -q --qf "%%{VERSION}-%%{RELEASE}.%%{ARCH}" kernel-devel 2>/dev/null || \
-        uname -r \
+    %define kernel_version %(
+        KERNEL_DEVEL_COUNT=$(rpm -qa kernel-devel 2>/dev/null | wc -l);
+        if [ "$KERNEL_DEVEL_COUNT" -eq 1 ]; then
+            rpm -q --qf '%%{VERSION}-%%{RELEASE}.%%{ARCH}' kernel-devel 2>/dev/null;
+        else
+            uname -r;
+        fi
     )
     %define kernel_build_path /lib/modules/%{kernel_version}/build
 %endif
@@ -287,6 +291,8 @@ tools of ums, contains ums_run
     -DUDMA_ST64B="enable" \
 %endif
 
+echo "tzs debug : hostname :$(hostname)"
+
 make %{?_smp_mflags}
 
 %install