diff --git a/lib/README b/lib/README
index 77edc5e..935f911 100644
--- a/lib/README
+++ b/lib/README
@@ -2,11 +2,11 @@ To load a library, try:
 
     read filename
 
-You to not need to add the .cal extension to the filename.  Calc
+You do not need to add the .cal extension to the filename.  Calc
 will search along the $CALCPATH (see ``help environment'').
 
 Normally a library will simply define some functions.  By default,
-most libraries will print out a short message when thei are read.
+most libraries will print out a short message when they are read.
 For example:
 
     > read lucas
@@ -360,7 +360,7 @@ randbitrun.cal
     randbitrun([run_cnt])
 
     Using randbit(1) to generate a sequence of random bits, determine if
-    the number and kength of identical bits runs match what is expected.
+    the number and length of identical bits runs match what is expected.
     By default, run_cnt is to test the next 65536 random values.
 
     This tests the a55 generator.
@@ -416,7 +416,7 @@ randrun.cal
 regress.cal
 
     Test the correct execution of the calculator by reading this library file.
-    Errors are reported with '****' mssages, or worse.	:-)
+    Errors are reported with '****' messages, or worse.	:-)
 
 
 seedrandom.cal
diff --git a/lib/regress.cal b/lib/regress.cal
index 8d08839..8f06200 100644
--- a/lib/regress.cal
+++ b/lib/regress.cal
@@ -3048,8 +3048,8 @@ define test_error()
 	print				'3712: e9999 = error(9999)';
 	vrfy(errno() == 9999,		'3713: errno() == 9999');
 	vrfy(error() == e9999,		'3714: error() == e9999');
-	vrfy(strerror() == "Unknown error 9999",
-				'3715: strerror() == "Unknown error 9999"');
+	vrfy(substr(strerror(), strlen(strerror())-3, 4) == "9999",
+		'3715: substr(strerror(), strlen(strerror())-3, 4) == "9999"');
 	x = newerror("Alpha");
 	print				'3716: x = newerror("Alpha")';
 	n = iserror(x);
@@ -3060,17 +3060,19 @@ define test_error()
 	vrfy(errno(9999) == n,		'3721: errno() == n');
 	vrfy(errno() == 9999,		'3722: errno() == 9999');
 	vrfy(error() == e9999,		'3723: error() == e9999');
-	vrfy(strerror() == "Unknown error 9999",
-				'3724: strerror() == "Unknown error 9999"');
+	vrfy(substr(strerror(), strlen(strerror())-3, 4) == "9999",
+		'3724: substr(strerror(), strlen(strerror())-3, 4) == "9999"');
 	a = 1/0;
 	print				'3725: a = 1/0';
 	vrfy(strerror() == "Division by zero",
 				'3726: strerror() == "Division by zero"');
+	vrfy(substr(strerror(9941), strlen(strerror(9941))-3, 4) == "9941",
+	 '3728: substr(strerror(9941), strlen(strerror(9941))-3, 4) == "9941"');
 
 	/* errmax and errcount should be bumped up the 148 errors above */
-	vrfy(errcount() == ecnt,	'3727: errcount() == ecnt');
+	vrfy(errcount() == ecnt,	'3728: errcount() == ecnt');
 
-	print '3728: Ending test_error';
+	print '3729: Ending test_error';
 }
 print '054: parsed test_error()';
 
diff --git a/version.c b/version.c
index adef41f..048d756 100644
--- a/version.c
+++ b/version.c
@@ -18,7 +18,7 @@ static char *program;
 #define MAJOR_VER	2	/* major version */
 #define MINOR_VER	11	/* minor version */
 #define MAJOR_PATCH	0	/* patch level or 0 if no patch */
-#define MINOR_PATCH	"10.1"	/* test number or empty string if no patch */
+#define MINOR_PATCH  "10.1.1"	/* test number or empty string if no patch */
 
 /*
  * calc version constants