diff --git a/ivtest/ivltests/sdf_interconnect4.sdf b/ivtest/ivltests/sdf_interconnect4.sdf
index ee4a6f244..6c6959836 100644
--- a/ivtest/ivltests/sdf_interconnect4.sdf
+++ b/ivtest/ivltests/sdf_interconnect4.sdf
@@ -13,7 +13,7 @@
 
   (CELL
     (CELLTYPE "my_design")
-    (INSTANCE)   
+    (INSTANCE)
     (DELAY
       (ABSOLUTE
         (INTERCONNECT a[0] buffer0.in  (0.000:0.020:0.000) (0.000:0.020:0.000))
@@ -35,7 +35,7 @@
       )
     )
   )
-  
+
   (CELL
     (CELLTYPE "buffer")
     (INSTANCE buffer1)
@@ -45,7 +45,7 @@
       )
     )
   )
-  
+
   (CELL
     (CELLTYPE "buffer")
     (INSTANCE buffer2)
diff --git a/ivtest/ivltests/sdf_interconnect4.v b/ivtest/ivltests/sdf_interconnect4.v
index b944ec719..918a34a98 100644
--- a/ivtest/ivltests/sdf_interconnect4.v
+++ b/ivtest/ivltests/sdf_interconnect4.v
@@ -45,10 +45,10 @@ module top;
         $sdf_annotate("ivltests/sdf_interconnect4.sdf", my_design_inst);
         $monitor("time=%0t a=%b b=%b", $realtime, a, b);
     end
-  
+
     reg [2:0] a;
     wire [2:0] b;
-    
+
     initial begin
         #5;
         a <= 3'b000;
@@ -57,7 +57,7 @@ module top;
         #10;
         $finish;
     end
-  
+
     my_design my_design_inst (
         .a (a),
         .b (b)