diff --git a/ChangeLog b/ChangeLog
index 4afa085..82f0cfc 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -88,7 +88,7 @@ anyway
 * fake_mremap is only used when defined to mremap
 * Remove unused cksem functions
 * Fix remaining use of mutexes lock/unlocking in different threads with cksems,
-corecting cksem usage on osx
+correcting cksem usage on osx
 * Update copyright dates
 * Make match_len a function completely removing all indirect calls to get_sb,
 significantly speeding up the single_get_sb case
diff --git a/README.md b/README.md
index 3403c5c..9bab3e0 100644
--- a/README.md
+++ b/README.md
@@ -61,7 +61,7 @@ Two different ways of doing this:
 
 Stable: Packaged tarball that is known to work:
 
-Go to <https://github.com/ckolivas/lrzip/releases> and downlaod the `tar.gz`
+Go to <https://github.com/ckolivas/lrzip/releases> and download the `tar.gz`
 file from the top. `cd` to the directory you downloaded, and use `tar xvzf lrzip-X.X.tar.gz`
 to extract the files (don't forget to replace `X.X` with the correct version). Finally, cd
 into the directory you just extracted.
diff --git a/doc/README.benchmarks b/doc/README.benchmarks
index cb295f1..7e3dd10 100644
--- a/doc/README.benchmarks
+++ b/doc/README.benchmarks
@@ -45,7 +45,7 @@ purpose compressor at the moment:
 
 These are benchmarks performed on a 2.53Ghz dual core Intel Core2 with 4GB ram
 using lrzip v0.5.1. Note that it was running with a 32 bit userspace so only
-2GB addressing was posible. However the benchmark was run with the -U option
+2GB addressing was possible. However the benchmark was run with the -U option
 allowing the whole file to be treated as one large compression window.
 
 Tarball of 6 consecutive kernel trees.
diff --git a/doc/lrzip.conf.example b/doc/lrzip.conf.example
index 7eaa0d9..00428ae 100644
--- a/doc/lrzip.conf.example
+++ b/doc/lrzip.conf.example
@@ -13,7 +13,7 @@
 # Use -U setting, Unlimited ram. Yes or No
 # UNLIMITED = NO
 # Compression Method, rzip, gzip, bzip2, lzo, or lzma (default), or zpaq. (-n -g -b -l --lzma -z)
-# May be overriden by command line compression choice.
+# May be overridden by command line compression choice.
 # COMPRESSIONMETHOD = lzma
 # Perform LZO Test. Default = YES (-T )
 # LZOTEST = NO
diff --git a/main.c b/main.c
index f70c53a..4519a63 100644
--- a/main.c
+++ b/main.c
@@ -409,9 +409,9 @@ int main(int argc, char *argv[])
 			control->flags |= FLAG_FORCE_REPLACE;
 			break;
 		case 'h':
-		case '?':
 			usage(compat);
-			return -1;
+			exit(0);
+			break;
 		case 'H':
 			control->flags |= FLAG_HASH;
 			break;
@@ -544,6 +544,9 @@ int main(int argc, char *argv[])
 		case '9':
 			control->compression_level = c - '0';
 			break;
+		default:
+			usage(compat);
+			return 2;
 		}
 	}