diff --git a/CMakeLists.txt b/CMakeLists.txt
index aea680672..d133de1fe 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -103,7 +103,7 @@ if(ENABLE_TESTING)
     COMMAND lcov --add-tracefile files.info --add-tracefile tests.info -o all.info
     COMMAND lcov --remove all.info -o final.info '*.h'
     COMMAND gendesc tests/Descriptions.txt -o descriptions
-    COMMAND genhtml --title mbed TLS --description-file descriptions --keep-descriptions --legend --no-branch-coverage -o Coverage final.info
+    COMMAND genhtml --title "mbed TLS" --description-file descriptions --keep-descriptions --legend --no-branch-coverage -o Coverage final.info
     COMMAND rm -f files.info tests.info all.info final.info descriptions
     )
 
diff --git a/Makefile b/Makefile
index 6eeb97840..17544a5c6 100644
--- a/Makefile
+++ b/Makefile
@@ -71,7 +71,7 @@ lcov:
 	lcov --add-tracefile files.info --add-tracefile tests.info -o all.info
 	lcov --remove all.info -o final.info '*.h'
 	gendesc tests/Descriptions.txt -o descriptions
-	genhtml --title mbed TLS --description-file descriptions --keep-descriptions --legend --no-branch-coverage -o Coverage final.info
+	genhtml --title "mbed TLS" --description-file descriptions --keep-descriptions --legend --no-branch-coverage -o Coverage final.info
 	rm -f files.info tests.info all.info final.info descriptions
 
 apidoc: