diff --git a/jni/libpng/jni/png.h b/jni/libpng/jni/png.h
index a3c21b9..40e10fd 100644
--- a/jni/libpng/jni/png.h
+++ b/jni/libpng/jni/png.h
@@ -1976,7 +1976,7 @@ extern PNG_EXPORT(void,png_set_crc_action) PNGARG((png_structp png_ptr,
  * mainly useful for testing, as the defaults should work with most users.
  * Those users who are tight on memory or want faster performance at the
  * expense of compression can modify them.  See the compression library
- * header file (zlib.h) for an explination of the compression functions.
+ * header file (zlib.h) for an explanation of the compression functions.
  */
 
 /* Set the filtering method(s) used by libpng.  Currently, the only valid