diff --git a/config/rv32gc/coverage.svh b/config/rv32gc/coverage.svh
index 97496a8b9..3952b1032 100644
--- a/config/rv32gc/coverage.svh
+++ b/config/rv32gc/coverage.svh
@@ -5,6 +5,9 @@
 // This file is needed in the config subdirectory for each config supporting coverage.
 // It defines which extensions are enabled for that config.
 
+// Define XLEN, used in covergroups
+`define XLEN32 1
+
 // Unprivileged extensions
 `include "RV32I_coverage.svh"
 `include "RV32M_coverage.svh"
diff --git a/config/rv64gc/coverage.svh b/config/rv64gc/coverage.svh
index d54a342dd..bbc6590c3 100644
--- a/config/rv64gc/coverage.svh
+++ b/config/rv64gc/coverage.svh
@@ -5,6 +5,9 @@
 // This file is needed in the config subdirectory for each config supporting coverage.
 // It defines which extensions are enabled for that config.
 
+// Define XLEN, used in covergroups
+`define XLEN64 1
+
 // Unprivileged extensions
 `include "RV64I_coverage.svh"
 `include "RV64M_coverage.svh"