diff --git a/FlippR-Driver/src/utilities/GPIOInterface.cpp b/FlippR-Driver/src/utilities/GPIOInterface.cpp
index f4e2d34..298a5d4 100644
--- a/FlippR-Driver/src/utilities/GPIOInterface.cpp
+++ b/FlippR-Driver/src/utilities/GPIOInterface.cpp
@@ -27,7 +27,7 @@ void GPIOInterface::write_pin(char address, char data)
 
 bool GPIOInterface::read_pin(char address)
 {
-  return PULLDOWN && digitalRead(address);
+  return PULLDOWN == digitalRead(address);
 }
 
 void GPIOInterface::initialize_output_pin(char address)