diff --git a/app/src/main/java/io/github/sspanak/tt9/ui/main/keys/SoftKeyNumber.java b/app/src/main/java/io/github/sspanak/tt9/ui/main/keys/SoftKeyNumber.java
index 50fa4063..25fa4ce2 100644
--- a/app/src/main/java/io/github/sspanak/tt9/ui/main/keys/SoftKeyNumber.java
+++ b/app/src/main/java/io/github/sspanak/tt9/ui/main/keys/SoftKeyNumber.java
@@ -225,6 +225,7 @@ public class SoftKeyNumber extends SoftKey {
 		return
 			currentLetter == 'ѝ'
 			|| currentLetter == 'ґ'
+			|| currentLetter == 'ς'
 			|| (isLatinBased && currentLetter > 'z')
 			|| (isGreek && (currentLetter < 'α' || currentLetter > 'ω'));
 	}