diff --git a/src/efinix.cpp b/src/efinix.cpp
index c096e3b..1182ff1 100644
--- a/src/efinix.cpp
+++ b/src/efinix.cpp
@@ -143,8 +143,7 @@ void Efinix::program(unsigned int offset, bool unprotect_flash)
 		programSPI(offset, data, length, unprotect_flash);
 }
 
-bool Efinix::dumpFlash(const std::string &filename,
-		uint32_t base_addr, uint32_t len)
+bool Efinix::dumpFlash(uint32_t base_addr, uint32_t len)
 {
 	uint32_t timeout = 1000;
 	_spi->gpio_clear(_rst_pin);
@@ -155,7 +154,7 @@ bool Efinix::dumpFlash(const std::string &filename,
 		SPIFlash flash(reinterpret_cast<SPIInterface *>(_spi), false, _verbose);
 		flash.reset();
 		flash.power_up();
-		flash.dump(filename, base_addr, len);
+		flash.dump(_filename, base_addr, len);
 	} catch (std::exception &e) {
 		printError("Fail");
 		printError(std::string(e.what()));
diff --git a/src/efinix.hpp b/src/efinix.hpp
index 7948735..fafe7cc 100644
--- a/src/efinix.hpp
+++ b/src/efinix.hpp
@@ -26,8 +26,7 @@ class Efinix: public Device {
 		~Efinix();
 
 		void program(unsigned int offset, bool unprotect_flash) override;
-		bool dumpFlash(const std::string &filename,
-			uint32_t base_addr, uint32_t len);
+		bool dumpFlash(uint32_t base_addr, uint32_t len) override;
 		virtual bool protect_flash(uint32_t len) override {
 			(void) len;
 			printError("protect flash not supported"); return false;}