diff --git a/src/plugins.cpp b/src/plugins.cpp
index b77d5f3..e6e6644 100644
--- a/src/plugins.cpp
+++ b/src/plugins.cpp
@@ -39,8 +39,8 @@ int LoadPlugins(void) {
 	/* If we are using per-disk memory cards, defer
 	 * loading until after the disk ID has been determined */
 	if ((Config.McdSlot1 != 0) && (Config.McdSlot2 != 0)) {
-		LoadMcd(MCD1, (char*)GetMemcardPath(1)); //Memcard 1
-		LoadMcd(MCD2, (char*)GetMemcardPath(2)); //Memcard 2
+		LoadMcd(MCD1, GetMemcardPath(1)); //Memcard 1
+		LoadMcd(MCD2, GetMemcardPath(2)); //Memcard 2
 	}
 
 	ret = CDR_init();
diff --git a/src/plugins.h b/src/plugins.h
index d9cb3e4..b57cfd3 100644
--- a/src/plugins.h
+++ b/src/plugins.h
@@ -200,6 +200,6 @@ s64 GetCdOpenCaseTime(void);
 int ReloadCdromPlugin();
 
 // Memcard functions
-const char *GetMemcardPath(int slot);
+char *GetMemcardPath(int slot);
 
 #endif /* __PLUGINS_H__ */
diff --git a/src/port/sdl/frontend.cpp b/src/port/sdl/frontend.cpp
index 15b67b2..afbdccb 100755
--- a/src/port/sdl/frontend.cpp
+++ b/src/port/sdl/frontend.cpp
@@ -1389,12 +1389,12 @@ static int McdSlot1_alter(u32 keys)
 	int slot = Config.McdSlot1;
 	if (keys & KEY_RIGHT)
 	{
-		if (++slot > 15) slot = 0;
+		if (++slot > 16) slot = -1;
 	}
 	else
 	if (keys & KEY_LEFT)
 	{
-		if (--slot < 0) slot = 15;
+		if (--slot < -1) slot = 16;
 	}
 	Config.McdSlot1 = slot;
 	update_memcards(1);
@@ -1404,7 +1404,9 @@ static int McdSlot1_alter(u32 keys)
 static char *McdSlot1_show()
 {
 	static char buf[32] = "\0";
-	if (Config.McdSlot1 == 0) {
+	if (Config.McdSlot1 == -1) {
+		strcpy(buf, "empty");
+	} else if (Config.McdSlot1 == 0) {
 		if (string_is_empty(CdromId)) {
 			strcpy(buf, "per-disk");
 		} else {
@@ -1421,12 +1423,12 @@ static int McdSlot2_alter(u32 keys)
 	int slot = Config.McdSlot2;
 	if (keys & KEY_RIGHT)
 	{
-		if (++slot > 16) slot = 0;
+		if (++slot > 16) slot = -1;
 	}
 	else
 	if (keys & KEY_LEFT)
 	{
-		if (--slot < 0) slot = 16;
+		if (--slot < -1) slot = 16;
 	}
 	Config.McdSlot2 = slot;
 	update_memcards(2);
@@ -1436,7 +1438,9 @@ static int McdSlot2_alter(u32 keys)
 static char *McdSlot2_show()
 {
 	static char buf[32] = "\0";
-	if (Config.McdSlot2 == 0) {
+	if (Config.McdSlot2 == -1) {
+		strcpy(buf, "empty");
+	} else if (Config.McdSlot2 == 0) {
 		if (string_is_empty(CdromId)) {
 			strcpy(buf, "per-disk");
 		} else {
diff --git a/src/port/sdl/port.cpp b/src/port/sdl/port.cpp
index eb5047e..d1fed5b 100755
--- a/src/port/sdl/port.cpp
+++ b/src/port/sdl/port.cpp
@@ -1132,19 +1132,29 @@ void video_clear_cache()
 #endif
 }
 
-const char *GetMemcardPath(int slot) {
+char *GetMemcardPath(int slot) {
 	switch(slot) {
 	case 1:
-		return McdPath1;
+		if (Config.McdSlot1 == -1) {
+			return NULL;
+		} else {
+			return McdPath1;
+		}
 	case 2:
-		return McdPath2;
+		if (Config.McdSlot2 == -1) {
+			return NULL;
+		} else {
+			return McdPath2;
+		}
 	}
 	return NULL;
 }
 
 void update_memcards(int load_mcd) {
 
-	if (Config.McdSlot1 == 0) {
+	if (Config.McdSlot1 == -1) {
+		McdPath1[0] = '\0';
+	} else if (Config.McdSlot1 == 0) {
 		if (string_is_empty(CdromId)) {
 			/* Fallback */
 			sprintf(McdPath1, "%s/%s", memcardsdir, "card1.mcd");
@@ -1155,7 +1165,9 @@ void update_memcards(int load_mcd) {
 		sprintf(McdPath1, "%s/mcd%03d.mcr", memcardsdir, (int)Config.McdSlot1);
 	}
 
-	if (Config.McdSlot2 == 0) {
+	if (Config.McdSlot2 == -1) {
+		McdPath2[0] = '\0';
+	} else if (Config.McdSlot2 == 0) {
 		if (string_is_empty(CdromId)) {
 			/* Fallback */
 			sprintf(McdPath2, "%s/%s", memcardsdir, "card2.mcd");
@@ -1167,9 +1179,9 @@ void update_memcards(int load_mcd) {
 	}
 
 	if (load_mcd & 1)
-		LoadMcd(MCD1, McdPath1); //Memcard 1
+		LoadMcd(MCD1, GetMemcardPath(1)); //Memcard 1
 	if (load_mcd & 2)
-		LoadMcd(MCD2, McdPath2); //Memcard 2
+		LoadMcd(MCD2, GetMemcardPath(2)); //Memcard 2
 }
 
 const char *bios_file_get() {
@@ -2004,8 +2016,8 @@ int main (int argc, char **argv)
 	 * them now */
 	if ((Config.McdSlot1 == 0) || (Config.McdSlot2 == 0)) {
 		update_memcards(0);
-		LoadMcd(MCD1, (char*)GetMemcardPath(1)); //Memcard 1
-		LoadMcd(MCD2, (char*)GetMemcardPath(2)); //Memcard 2
+		LoadMcd(MCD1, GetMemcardPath(1)); //Memcard 1
+		LoadMcd(MCD2, GetMemcardPath(2)); //Memcard 2
 	}
 
 	Rumble_Init();
diff --git a/src/psxcommon.h b/src/psxcommon.h
index 85ef6af..1f1c170 100644
--- a/src/psxcommon.h
+++ b/src/psxcommon.h
@@ -139,8 +139,8 @@ typedef struct {
 	boolean VSyncWA; /* 1=InuYasha Sengoku Battle Fix */
 	u8 Cpu; /* 0=recompiler, 1=interpreter */
 	u8 PsxType; /* 0=ntsc, 1=pal */
-	u8 McdSlot1; /* mcd slot 1, 0=CdromId.1.mcr, otherwise mcd%03u.mcr */
-	u8 McdSlot2; /* mcd slot 2, 0=CdromId.2.mcr, otherwise mcd%03u.mcr */
+	s8 McdSlot1; /* mcd slot 1, -1=empty, 0=CdromId.1.mcr, otherwise mcd%03u.mcr */
+	s8 McdSlot2; /* mcd slot 2, -1=empty, 0=CdromId.2.mcr, otherwise mcd%03u.mcr */
 
 	/* Gamepad combo used to open menu
 	 * 0: L3 + R3