diff --git a/hdl/corr_ll.vhd b/hdl/corr_ll.vhd
index cda56f133201d46142036d1b9727fd627f373f21..6325d65302258f7301fe49553b81d9ae14f78a00 100644
--- a/hdl/corr_ll.vhd
+++ b/hdl/corr_ll.vhd
@@ -101,7 +101,7 @@ begin
     begin
 
         -- Signal mux for X/Y coef and enable/reset, based on PSCID number
-        gen_x_sigmux:if I < 51 generate
+        gen_x_sigmux:if I < 50 generate
             coef_a         <= coef_a_x;
             coef_b         <= coef_b_x;
             coef_ic        <= coef_ic_x;
@@ -110,7 +110,7 @@ begin
             reset_corr     <= reset_corr_x;
         end generate;
 
-        gen_y_sigmux:if I > 50 generate
+        gen_y_sigmux:if I > 49 generate
             coef_a         <= coef_a_y;
             coef_b         <= coef_b_y;
             coef_ic        <= coef_ic_y;