diff --git a/src/ftdispi.cpp b/src/ftdispi.cpp
index 4efcc33..68ea371 100644
--- a/src/ftdispi.cpp
+++ b/src/ftdispi.cpp
@@ -68,7 +68,7 @@ static cable_t cable = {
 };
 
 FtdiSpi::FtdiSpi(int vid, int pid, unsigned char interface, uint32_t clkHZ,
-	bool verbose):
+	int8_t verbose):
 	FTDIpp_MPSSE(cable, "", "", clkHZ, verbose)
 {
 	(void)pid;
@@ -83,7 +83,7 @@ FtdiSpi::FtdiSpi(int vid, int pid, unsigned char interface, uint32_t clkHZ,
 
 FtdiSpi::FtdiSpi(const cable_t &cable,
 		spi_pins_conf_t spi_config,
-		uint32_t clkHZ, bool verbose):
+		uint32_t clkHZ, int8_t verbose):
 		FTDIpp_MPSSE(cable, "", "", clkHZ, verbose),
 		_cs_bits(1 << 3), _clk(1 << 0), _holdn(0), _wpn(0)
 {
diff --git a/src/ftdispi.hpp b/src/ftdispi.hpp
index 360c149..02c2f77 100644
--- a/src/ftdispi.hpp
+++ b/src/ftdispi.hpp
@@ -28,10 +28,10 @@ class FtdiSpi : public FTDIpp_MPSSE, SPIInterface {
 	};
 
 	FtdiSpi(int vid, int pid, unsigned char interface, uint32_t clkHZ,
-		bool verbose);
+		int8_t verbose);
 	FtdiSpi(const cable_t &cable,
 		spi_pins_conf_t spi_config, uint32_t clkHZ,
-		bool verbose);
+		int8_t verbose);
 	~FtdiSpi();
 
 	void setMode(uint8_t mode);
diff --git a/src/main.cpp b/src/main.cpp
index b2e29db..2071b1a 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -256,7 +256,7 @@ int main(int argc, char **argv)
 			pins_config = board->spi_pins_config;
 
 		try {
-			spi = new FtdiSpi(cable, pins_config, args.freq, args.verbose > 0);
+			spi = new FtdiSpi(cable, pins_config, args.freq, args.verbose);
 		} catch (std::exception &e) {
 			printError("Error: Failed to claim cable");
 			return EXIT_FAILURE;