diff --git a/src/ppu.c b/src/ppu.c
index e2c554c..8951441 100644
--- a/src/ppu.c
+++ b/src/ppu.c
@@ -3998,7 +3998,7 @@ static INLINE bool8 addCyclesInDMA (uint8 dma_channel)
 	return retval;
 }
 
-static uint8 dma_channels_to_be_used[8];
+static uint8 dma_channels_to_be_used[8] = {0};
 static bool8 special_chips_active = FALSE;
 
 
diff --git a/src/tile.c b/src/tile.c
index 44ebdab..e269c11 100644
--- a/src/tile.c
+++ b/src/tile.c
@@ -214,7 +214,7 @@ static INLINE uint16 COLOR_SUB (uint16 C1, uint16 C2)
 }
 
 static uint16	DirectColourMaps[8][256];
-static uint16 BlackColourMap[256]};
+static uint16 BlackColourMap[256] = {0};
 
 static void S9xBuildDirectColourMaps (void)
 {