diff --git a/EPD/EPD_driver.c b/EPD/EPD_driver.c
index c301713..e8ce3b1 100644
--- a/EPD/EPD_driver.c
+++ b/EPD/EPD_driver.c
@@ -206,14 +206,14 @@ uint8_t EPD_ReadByte(void)
     return value;
 }
 
-void EPD_FillRAM(uint8_t cmd, uint8_t value)
+void EPD_FillRAM(uint8_t cmd, uint8_t value, uint32_t len)
 {
     uint8_t buffer[BUFFER_SIZE];
     for (uint8_t i = 0; i < BUFFER_SIZE; i++)
         buffer[i] = value;
 
     EPD_WriteCmd(cmd);
-    uint16_t remaining = ((EPD->width + 7) / 8) * EPD->height;
+    uint16_t remaining = len;
     while (remaining > 0) {
         uint16_t chunk_size = (remaining > BUFFER_SIZE) ? BUFFER_SIZE : remaining;
         EPD_WriteData(buffer, chunk_size);
diff --git a/EPD/EPD_driver.h b/EPD/EPD_driver.h
index 3d78836..f793648 100644
--- a/EPD/EPD_driver.h
+++ b/EPD/EPD_driver.h
@@ -94,7 +94,7 @@ uint8_t EPD_ReadByte(void);
         EPD_WriteCmd(cmd); \
         EPD_WriteData(_data, sizeof(_data)); \
     } while (0)
-void EPD_FillRAM(uint8_t cmd, uint8_t value);
+void EPD_FillRAM(uint8_t cmd, uint8_t value, uint32_t len);
 void EPD_Reset(uint32_t value, uint16_t duration);
 void EPD_WaitBusy(uint32_t value, uint16_t timeout);
 
diff --git a/EPD/SSD1619.c b/EPD/SSD1619.c
index 6a56655..270471b 100644
--- a/EPD/SSD1619.c
+++ b/EPD/SSD1619.c
@@ -146,11 +146,12 @@ static void SSD1619_Refresh(void)
 void SSD1619_Clear(bool refresh)
 {
     epd_model_t *EPD = epd_get();
+    uint32_t ram_bytes = ((EPD->width + 7) / 8) * EPD->height;
 
     _setPartialRamArea(0, 0, EPD->width, EPD->height);
 
-    EPD_FillRAM(CMD_WRITE_RAM1, 0xFF);
-    EPD_FillRAM(CMD_WRITE_RAM2, 0xFF);
+    EPD_FillRAM(CMD_WRITE_RAM1, 0xFF, ram_bytes);
+    EPD_FillRAM(CMD_WRITE_RAM2, 0xFF, ram_bytes);
 
     if (refresh)
         SSD1619_Refresh();
diff --git a/EPD/UC8176.c b/EPD/UC8176.c
index 49865cb..3e1ba85 100644
--- a/EPD/UC8176.c
+++ b/EPD/UC8176.c
@@ -163,8 +163,11 @@ void UC8176_Init()
 
 void UC8176_Clear(bool refresh)
 {
-    EPD_FillRAM(CMD_DTM1, 0xFF);
-    EPD_FillRAM(CMD_DTM2, 0xFF);
+    epd_model_t *EPD = epd_get();
+    uint32_t ram_bytes = ((EPD->width + 7) / 8) * EPD->height;
+
+    EPD_FillRAM(CMD_DTM1, 0xFF, ram_bytes);
+    EPD_FillRAM(CMD_DTM2, 0xFF, ram_bytes);
 
     if (refresh)
         UC8176_Refresh();