diff --git a/INSTALL b/INSTALL
index 8f2836c742..7a44ad8896 100644
--- a/INSTALL
+++ b/INSTALL
@@ -60,7 +60,7 @@ This means that gcc users will have to install the relevant libstdc++
 library to be able to compile this version of LyX.
 
 For full LyX usability we suggest to use Qt 5.6 and higher, or at the
-very least Qt 5.4. It is also possible to compile against Qt 6.The
+very least Qt 5.4. It is also possible to compile against Qt 6. The
 only special point to make is that you must ensure that both LyX and
 the Qt libraries are compiled with the same C++ compiler.