diff --git a/backend_common.c b/backend_common.c
index 890a0b9..ea59d5b 100644
--- a/backend_common.c
+++ b/backend_common.c
@@ -28,6 +28,8 @@
 #include <libusb-1.0/libusb.h>
 #include <arpa/inet.h>
 
+#define BACKEND_VERSION "0.1"
+
 #define STR_LEN_MAX 64
 #define DEBUG( ... ) fprintf(stderr, "DEBUG: " __VA_ARGS__ )
 #define DEBUG2( ... ) fprintf(stderr, __VA_ARGS__ )
diff --git a/kodak1400_print.c b/kodak1400_print.c
index a8f5909..451ebea 100644
--- a/kodak1400_print.c
+++ b/kodak1400_print.c
@@ -212,7 +212,7 @@ int main (int argc, char **argv)
 	uint8_t rdbuf[READBACK_LEN], rdbuf2[READBACK_LEN];
 	int last_state = -1, state = S_IDLE;
 
-	DEBUG("Kodak 1400 CUPS backend version " VERSION " \n");
+	DEBUG("Kodak 1400 CUPS backend version " VERSION "/" BACKEND_VERSION " \n");
 
 	/* Cmdline help */
 	if (argc < 2) {
diff --git a/kodak6800_print.c b/kodak6800_print.c
index 8fd8d68..4f5571b 100644
--- a/kodak6800_print.c
+++ b/kodak6800_print.c
@@ -135,7 +135,7 @@ int main (int argc, char **argv)
 	uint8_t rdbuf2[READBACK_LEN];
 	int last_state = -1, state = S_IDLE;
 
-	DEBUG("Kodak 6800 CUPS backend version " VERSION " \n");
+	DEBUG("Kodak 6800 CUPS backend version " VERSION "/" BACKEND_VERSION " \n");
 
 	/* Cmdline help */
 	if (argc < 2) {
diff --git a/selphy_print.c b/selphy_print.c
index 8e2dae9..d0fbdbb 100644
--- a/selphy_print.c
+++ b/selphy_print.c
@@ -494,7 +494,7 @@ int main (int argc, char **argv)
 	/* Static initialization */
 	setup_paper_codes();
 
-	DEBUG("Canon SELPHY ES/CP CUPS backend version " VERSION " \n");
+	DEBUG("Canon SELPHY ES/CP CUPS backend version " VERSION "/" BACKEND_VERSION " \n");
 
 	/* Cmdline help */
 	if (argc < 2) {