diff --git a/src/Inkplate.cpp b/src/Inkplate.cpp
index fffbc64..e42390c 100644
--- a/src/Inkplate.cpp
+++ b/src/Inkplate.cpp
@@ -160,7 +160,7 @@ void Inkplate::begin(void)
     memset(_partial, 0, 60000);
     memset(_pBuffer, 0, 120000);
     memset(D_memory4Bit, 255, 240000);
-    
+
     _beginDone = 1;
 }
 
@@ -495,9 +495,10 @@ void Inkplate::einkOff()
     delay(6);
     PWRUP_CLEAR;
     WAKEUP_CLEAR;
-    
+
     unsigned long timer = millis();
-    do {
+    do
+    {
         delay(1);
     } while ((readPowerGood() != 0) && (millis() - timer) < 250);
 
@@ -531,26 +532,28 @@ void Inkplate::einkOn()
     VCOM_SET;
 
     unsigned long timer = millis();
-    do {
+    do
+    {
         delay(1);
     } while ((readPowerGood() != PWR_GOOD_OK) && (millis() - timer) < 250);
-	if ((millis() - timer) >= 250)
+    if ((millis() - timer) >= 250)
     {
         WAKEUP_CLEAR;
-		VCOM_CLEAR;
-		PWRUP_CLEAR;
-		return;
+        VCOM_CLEAR;
+        PWRUP_CLEAR;
+        return;
     }
 
     OE_SET;
     setPanelState(1);
 }
 
-uint8_t Inkplate::readPowerGood() {
+uint8_t Inkplate::readPowerGood()
+{
     Wire.beginTransmission(0x48);
     Wire.write(0x0F);
     Wire.endTransmission();
-	
+
     Wire.requestFrom(0x48, 1);
     return Wire.read();
 }
diff --git a/src/include/System.cpp b/src/include/System.cpp
index 65d4c0c..95582de 100644
--- a/src/include/System.cpp
+++ b/src/include/System.cpp
@@ -32,7 +32,7 @@ uint8_t System::getPanelState()
 int8_t System::readTemperature()
 {
     int8_t temp;
-    if(getPanelState() == 0)
+    if (getPanelState() == 0)
     {
         WAKEUP_SET;
         PWRUP_SET;
@@ -50,7 +50,7 @@ int8_t System::readTemperature()
 
     Wire.requestFrom(0x48, 1);
     temp = Wire.read();
-    if(getPanelState() == 0)
+    if (getPanelState() == 0)
     {
         PWRUP_CLEAR;
         WAKEUP_CLEAR;
diff --git a/test/partial/partial.ino b/test/partial/partial.ino
new file mode 100644
index 0000000..09ca3b7
--- /dev/null
+++ b/test/partial/partial.ino
@@ -0,0 +1,25 @@
+#include "Inkplate.h"
+
+Inkplate display(INKPLATE_1BIT);
+
+void setup()
+{
+    Serial.begin(115200);
+    display.begin();
+}
+
+void loop()
+{
+    for (int j = 0; j < 50; ++j)
+    {
+        for (int i = 0; i < 100; ++i)
+            display.drawFastVLine(i * 5 + j * 3, 0, 600, BLACK);
+        for (int i = 0; i < 100; ++i)
+            display.drawFastHLine(j * 3, i * 5, 800, BLACK);
+        display.partialUpdate();
+        display.clearDisplay();
+    }
+
+    display.clean();
+    display.display();
+}