diff --git a/R/USairports.R b/R/USairports.R
index 75edf30..2b830af 100644
--- a/R/USairports.R
+++ b/R/USairports.R
@@ -34,7 +34,7 @@
 #'       domestic and international carriers that performed at least one
 #'       flight in December of 2010.}
 #'     \item{Departures}{The number of departures (for a given airline and
-#'       aircraft type.}
+#'       aircraft type).}
 #'     \item{Seats}{The total number of seats available on the flights
 #'       carried out by a given airline, using a given aircraft type.}
 #'     \item{Passengers}{The total number of passangers on the flights
diff --git a/R/yeast.R b/R/yeast.R
index 3628b6d..11ba4e0 100644
--- a/R/yeast.R
+++ b/R/yeast.R
@@ -50,7 +50,7 @@
 #'
 #'   Vertex attributes: \sQuote{name}, \sQuote{Description},
 #'   \sQuote{Class}, the last one contains the class of the protein,
-#'   accoring to the classification above.
+#'   according to the classification above.
 #'
 #'   Note that some proteins in the network did not appear in the
 #'   annotation files, the \sQuote{Class} and \sQuote{Description}
diff --git a/man/USairports.Rd b/man/USairports.Rd
index 0f72cc6..129da9a 100644
--- a/man/USairports.Rd
+++ b/man/USairports.Rd
@@ -21,7 +21,7 @@ Edge attributes:
 domestic and international carriers that performed at least one
 flight in December of 2010.}
 \item{Departures}{The number of departures (for a given airline and
-aircraft type.}
+aircraft type).}
 \item{Seats}{The total number of seats available on the flights
 carried out by a given airline, using a given aircraft type.}
 \item{Passengers}{The total number of passangers on the flights
diff --git a/man/yeast.Rd b/man/yeast.Rd
index 4d5e484..fcdb998 100644
--- a/man/yeast.Rd
+++ b/man/yeast.Rd
@@ -38,7 +38,7 @@ and \sQuote{cellular communication /  signal transduction} and
 
 Vertex attributes: \sQuote{name}, \sQuote{Description},
 \sQuote{Class}, the last one contains the class of the protein,
-accoring to the classification above.
+according to the classification above.
 
 Note that some proteins in the network did not appear in the
 annotation files, the \sQuote{Class} and \sQuote{Description}