diff --git a/deps/double-conversion/double-conversion/double-to-string.h b/deps/double-conversion/double-conversion/double-to-string.h
index 04a4ac3..0cfb140 100644
--- a/deps/double-conversion/double-conversion/double-to-string.h
+++ b/deps/double-conversion/double-conversion/double-to-string.h
@@ -325,7 +325,7 @@ class DoubleToStringConverter {
   // except for the following cases:
   //   - the input value is special and no infinity_symbol or nan_symbol has
   //     been provided to the constructor,
-  //   - precision < kMinPericisionDigits
+  //   - precision < kMinPrecisionDigits
   //   - precision > kMaxPrecisionDigits
   //
   // The last condition implies that the result never contains more than
diff --git a/lib/ultrajson.h b/lib/ultrajson.h
index d4fec61..143cd9e 100644
--- a/lib/ultrajson.h
+++ b/lib/ultrajson.h
@@ -201,12 +201,12 @@ typedef struct __JSONObjectEncoder
 
   /*
   Retrieve next object in an iteration. Should return 0 to indicate iteration has reached end or 1 if there are more items.
-  Implementor is responsible for keeping state of the iteration. Use ti->prv fields for this
+  Implementer is responsible for keeping state of the iteration. Use ti->prv fields for this
   */
   JSPFN_ITERNEXT iterNext;
 
   /*
-  Ends the iteration of an iteratable object.
+  Ends the iteration of an iterable object.
   Any iteration state stored in ti->prv can be freed here
   */
   JSPFN_ITEREND iterEnd;
@@ -284,7 +284,7 @@ typedef struct __JSONObjectEncoder
   void *d2s;
 
   /*
-  Set to an error message if error occured */
+  Set to an error message if error occurred */
   const char *errorMsg;
   JSOBJ errorObj;