diff --git a/src/test/java/org/takes/facets/fork/TkForkTest.java b/src/test/java/org/takes/facets/fork/TkForkTest.java
index ea33682fe..c87373c88 100644
--- a/src/test/java/org/takes/facets/fork/TkForkTest.java
+++ b/src/test/java/org/takes/facets/fork/TkForkTest.java
@@ -55,7 +55,7 @@ public void dispatchesByRegularExpression() throws IOException {
             Matchers.equalTo(
                 Joiner.on("\r\n").join(
                     "HTTP/1.1 200 OK",
-                    String.format("Content-Length:%s", body.length()),
+                    String.format("Content-Length: %s", body.length()),
                     "Content-Type: text/plain",
                     "",
                     body
diff --git a/src/test/java/org/takes/rs/RsTextTest.java b/src/test/java/org/takes/rs/RsTextTest.java
index f2c0826c7..d7e03ab25 100644
--- a/src/test/java/org/takes/rs/RsTextTest.java
+++ b/src/test/java/org/takes/rs/RsTextTest.java
@@ -49,7 +49,7 @@ public void makesPlainTextResponse() throws IOException {
             Matchers.equalTo(
                 Joiner.on("\r\n").join(
                     "HTTP/1.1 200 OK",
-                    String.format("Content-Length:%s", body.length()),
+                    String.format("Content-Length: %s", body.length()),
                     "Content-Type: text/plain",
                     "",
                     body
diff --git a/src/test/java/org/takes/tk/TkHTMLTest.java b/src/test/java/org/takes/tk/TkHTMLTest.java
index 3167eba0f..c47b5f0e5 100644
--- a/src/test/java/org/takes/tk/TkHTMLTest.java
+++ b/src/test/java/org/takes/tk/TkHTMLTest.java
@@ -52,7 +52,7 @@ public void createsTextResponse() throws IOException {
             Matchers.equalTo(
                 Joiner.on("\r\n").join(
                     "HTTP/1.1 200 OK",
-                    String.format("Content-Length:%s", body.length()),
+                    String.format("Content-Length: %s", body.length()),
                     "Content-Type: text/html",
                     "",
                     body
diff --git a/src/test/java/org/takes/tk/TkTextTest.java b/src/test/java/org/takes/tk/TkTextTest.java
index 49ddf686a..6187e9de1 100644
--- a/src/test/java/org/takes/tk/TkTextTest.java
+++ b/src/test/java/org/takes/tk/TkTextTest.java
@@ -52,7 +52,7 @@ public void createsTextResponse() throws IOException {
             Matchers.equalTo(
                 Joiner.on("\r\n").join(
                     "HTTP/1.1 200 OK",
-                    String.format("Content-Length:%s", body.length()),
+                    String.format("Content-Length: %s", body.length()),
                     "Content-Type: text/plain",
                     "",
                     body