diff --git a/VERSION b/VERSION
index fe887032..febc9584 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-8.3.39
+8.3.40
diff --git a/lef/lefWrite.c b/lef/lefWrite.c
index 2762e09c..ed3b0021 100644
--- a/lef/lefWrite.c
+++ b/lef/lefWrite.c
@@ -285,10 +285,13 @@ lefWriteHeader(def, f, lefTech, propTable, siteTable)
 	}
     }
 
-    fprintf(f, "UNITS\n");
-    fprintf(f, IN0 "DATABASE MICRONS %d ;\n", LEFdbUnits);
-    fprintf(f, "END UNITS\n");
-    fprintf(f, "\n");
+    if (lefTech)
+    {
+	fprintf(f, "UNITS\n");
+	fprintf(f, IN0 "DATABASE MICRONS %d ;\n", LEFdbUnits);
+	fprintf(f, "END UNITS\n");
+	fprintf(f, "\n");
+    }
 
     HashStartSearch(&hs);
     nprops = 0;