diff --git a/source/Helper/PTDIntelHex.m b/source/Helper/PTDIntelHex.m
index a1454ec..090a9df 100644
--- a/source/Helper/PTDIntelHex.m
+++ b/source/Helper/PTDIntelHex.m
@@ -141,7 +141,7 @@ - (NSUInteger)numberFromHexString:(NSString *)hexString
 
 /**
  *  Parse raw bytes from a string containing ASCII hex characters.
- *  @param The string with ASCII hex characters
+ *  @param hexString The string with ASCII hex characters
  *  @param offset The offset of the first character in the slice. 0 starts from the beginning of the string.
  *  @param len The number of characters in the slice
  *  @return An NSData object containing the raw bytes from the hex string
@@ -154,7 +154,7 @@ - (NSData *)bytesFromHexString:(NSString *)hexString offset:(NSUInteger)offset l
 
 /**
  *  Parse raw bytes from a string containing ASCII hex characters.
- *  @param The string with ASCII hex characters
+ *  @param hexString The string with ASCII hex characters
  *  @return An NSData object containing the raw bytes from the hex string
  */
 - (NSData *)bytesFromHexString:(NSString *)hexString
diff --git a/source/Profiles/OAD/OadProfile.m b/source/Profiles/OAD/OadProfile.m
index c7e6793..b896d98 100644
--- a/source/Profiles/OAD/OadProfile.m
+++ b/source/Profiles/OAD/OadProfile.m
@@ -363,7 +363,7 @@ - (void)enableNotify
 /**
  *  Offer one OAD image to Bean.
  *
- *  @param firstImage YES to offer the first image to Bean, NO to offer the next unoffered image
+ *  @param offerFirstImage YES to offer the first image to Bean, NO to offer the next unoffered image
  */
 - (void)offerOneImageUsingFirstImage:(BOOL)offerFirstImage
 {
diff --git a/source/Public/PTDBean.h b/source/Public/PTDBean.h
index d48895e..fe1b906 100644
--- a/source/Public/PTDBean.h
+++ b/source/Public/PTDBean.h
@@ -299,7 +299,7 @@ typedef NS_ENUM(NSUInteger, BeanBluetoothError) {
  *  A serious error has occurred that Bean can't resolve. The client must resolve this issue.
  *
  *  @param bean The Bean that encountered this issue
- *  @param bluetoothError a BeanBluetoothError indicating what went wrong
+ *  @param error a BeanBluetoothError indicating what went wrong
  */
 - (void)bean:(PTDBean *)bean bluetoothError:(BeanBluetoothError)error;
 
@@ -470,7 +470,7 @@ typedef NS_ENUM(NSUInteger, BeanBluetoothError) {
 /**
  *  Temporarily turns the Bean's Arduino on or off.
  *
- *  @param "YES" sets the Arduino to a powered-on state and "NO" is a shutdown state.
+ *  @param state "YES" sets the Arduino to a powered-on state and "NO" is a shutdown state.
  */
 -(void)setArduinoPowerState:(ArduinoPowerState)state;
 /**
@@ -607,7 +607,7 @@ typedef NS_ENUM(NSUInteger, BeanBluetoothError) {
 /**
  *  Requests Bean's current scratch bank data.
  *  @discussion When you call this method to read one of the Bean's scratch banks, the bean calls the [PTDBeanDelegate bean:didUpdateScratchBank:withValue:] method of its delegate object.
- *  @param The index of the scratch bank to request, from 1 to 5.
+ *  @param bank The index of the scratch bank to request, from 1 to 5.
  *  @see [PTDBeanDelegate bean:didUpdateScratchBank:withValue:]
  */
 -(void)readScratchBank:(NSInteger)bank;