diff --git a/tests/data/test1116 b/tests/data/test1116
index 7a883bfe1a..3543e751b3 100644
--- a/tests/data/test1116
+++ b/tests/data/test1116
@@ -41,6 +41,9 @@ chunky-trailer: header data
 another-header: yes
 %endif
 </datacheck>
+<servercmd>
+writedelay: 10
+</servercmd>
 </reply>
 
 #
diff --git a/tests/data/test1540 b/tests/data/test1540
index 818cbb68dc..2dc8265558 100644
--- a/tests/data/test1540
+++ b/tests/data/test1540
@@ -34,7 +34,9 @@ Got 4 bytes but pausing!
 datad474
 MyCoolTrailerHeader: amazingtrailer
 </datacheck>
-
+<servercmd>
+writedelay: 10
+</servercmd>
 </reply>
 # Client-side
 <client>
diff --git a/tests/data/test266 b/tests/data/test266
index 6b5d2e6c77..4f5f359d80 100644
--- a/tests/data/test266
+++ b/tests/data/test266
@@ -37,6 +37,9 @@ Connection: mooo
 aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaabbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbcccccccccccccccccccccccccccccccc
 chunky-trailer: header data
 </datacheck>
+<servercmd>
+writedelay: 10
+</servercmd>
 </reply>
 
 #