diff --git a/config/rv32gc/imperas.ic b/config/rv32gc/imperas.ic
index a4b5fe64c..46d0d31c3 100644
--- a/config/rv32gc/imperas.ic
+++ b/config/rv32gc/imperas.ic
@@ -71,6 +71,7 @@
 
 --override no_pseudo_inst=T # For code coverage, don't produce pseudoinstructions
 
+--override show_c_prefix=T  # Show "c." with compressed instructions
 
 # mcause and scause only have 4 lsbs of code and 1 msb of interrupt flag
 #--override cpu/ecode_mask=0x8000000F  # for RV32
diff --git a/config/rv64gc/imperas.ic b/config/rv64gc/imperas.ic
index 0ff19fa68..9ba14f2f0 100644
--- a/config/rv64gc/imperas.ic
+++ b/config/rv64gc/imperas.ic
@@ -70,6 +70,9 @@
 # For code coverage, don't produce pseudoinstructions
 --override no_pseudo_inst=T 
 
+# Show "c." with compressed instructions 
+--override show_c_prefix=T
+
 # nonratified mnosie register not implemented
 --override cpu/mnoise_undefined=T