diff --git a/Source/NSUser.m b/Source/NSUser.m
index df8f652c3..7e29bddd4 100644
--- a/Source/NSUser.m
+++ b/Source/NSUser.m
@@ -913,7 +913,7 @@ NSTemporaryDirectory(void)
 
 /**
  * Returns the root directory for the OpenStep (GNUstep) installation.
- * This si determined by the GNUSTEP_ROOT environment variable if available.
+ * This is determined by the GNUSTEP_ROOT environment variable if available.
  */
 NSString *
 NSOpenStepRootDirectory(void)