diff --git a/litex/soc/cores/cpu/femtorv/core.py b/litex/soc/cores/cpu/femtorv/core.py
index a839b33ec..79d7c1924 100644
--- a/litex/soc/cores/cpu/femtorv/core.py
+++ b/litex/soc/cores/cpu/femtorv/core.py
@@ -39,7 +39,7 @@ GCC_FLAGS = {
     "electron":         "-march=rv32im    -mabi=ilp32",
     "intermissum":      "-march=rv32im    -mabi=ilp32",
     "gracilis":         "-march=rv32imc   -mabi=ilp32",
-    "petitbateau":      "-march=rv32imcf  -mabi=ilp32f",
+    "petitbateau":      "-march=rv32imfc  -mabi=ilp32f",
 }
 
 # FemtoRV ------------------------------------------------------------------------------------------