diff --git a/soc/sensry/ganymed/sy1xx/CMakeLists.txt b/soc/sensry/ganymed/sy1xx/CMakeLists.txt
index d7fc17252295a..4b5c2ac012100 100644
--- a/soc/sensry/ganymed/sy1xx/CMakeLists.txt
+++ b/soc/sensry/ganymed/sy1xx/CMakeLists.txt
@@ -3,8 +3,6 @@
 
 zephyr_include_directories(common)
 
-zephyr_compile_options(-march=rv32imc_zicsr -mabi=ilp32)
-
 zephyr_sources(
         common/crt0.S
         common/soc.c
diff --git a/soc/sensry/ganymed/sy1xx/Kconfig b/soc/sensry/ganymed/sy1xx/Kconfig
index 54d6d4930bb61..cf85d4ddddf16 100644
--- a/soc/sensry/ganymed/sy1xx/Kconfig
+++ b/soc/sensry/ganymed/sy1xx/Kconfig
@@ -5,6 +5,7 @@ config SOC_SERIES_SY1XX
 	select RISCV
 	select RISCV_ISA_RV32I
 	select RISCV_ISA_EXT_M
+	select RISCV_ISA_EXT_C
 	select RISCV_ISA_EXT_ZICSR
 	select RISCV_PRIVILEGED
 	select ATOMIC_OPERATIONS_C