diff --git a/symbols/gr b/symbols/gr
index 4ededb3..7859a62 100644
--- a/symbols/gr
+++ b/symbols/gr
@@ -90,7 +90,8 @@ hidden partial alphanumeric_keys alternate_group
 xkb_symbols "bare" {
 
     key <AD01> { [             semicolon,          colon ] }; // ; :
-    key <AD02> { [ Greek_finalsmallsigma,    Greek_SIGMA ] }; // ς Σ
+    key <AD02> {type[group1] = "ALPHABETIC",
+                 [ Greek_finalsmallsigma,    Greek_SIGMA ] }; // ς Σ
     key <AD03> { [         Greek_epsilon,  Greek_EPSILON ] }; // ε Ε
     key <AD04> { [             Greek_rho,      Greek_RHO ] }; // ρ Ρ
     key <AD05> { [             Greek_tau,      Greek_TAU ] }; // τ Τ