diff --git a/src/backend/utils/adt/numeric.c b/src/backend/utils/adt/numeric.c
index 1d0ca1b794..3e5614ece3 100644
--- a/src/backend/utils/adt/numeric.c
+++ b/src/backend/utils/adt/numeric.c
@@ -8175,8 +8175,7 @@ power_var_int(NumericVar *base, int exp, NumericVar *result, int rscale)
 			 * While 0 ^ 0 can be either 1 or indeterminate (error), we treat
 			 * it as 1 because most programming languages do this. SQL:2003
 			 * also requires a return value of 1.
-			 * http://en.wikipedia.org/wiki/Exponentiation#Zero_to_the_zero_pow
-			 * er
+			 * http://en.wikipedia.org/wiki/Exponentiation#Zero_to_the_zero_power
 			 */
 			set_var_from_var(&const_one, result);
 			result->dscale = rscale;	/* no need to round */
diff --git a/src/backend/utils/adt/selfuncs.c b/src/backend/utils/adt/selfuncs.c
index ce4c5b5078..e103f5ef16 100644
--- a/src/backend/utils/adt/selfuncs.c
+++ b/src/backend/utils/adt/selfuncs.c
@@ -4220,8 +4220,7 @@ convert_string_datum(Datum value, Oid typid)
 
 		/*
 		 *
-		 * http://connect.microsoft.com/VisualStudio/feedback/ViewFeedback.aspx?
-		 * FeedbackID=99694
+		 * http://connect.microsoft.com/VisualStudio/feedback/ViewFeedback.aspx?FeedbackID=99694
 		 */
 		{
 			char		x[1];
diff --git a/src/bin/pg_ctl/pg_ctl.c b/src/bin/pg_ctl/pg_ctl.c
index 095d68e21d..82ac62d5f4 100644
--- a/src/bin/pg_ctl/pg_ctl.c
+++ b/src/bin/pg_ctl/pg_ctl.c
@@ -257,8 +257,7 @@ get_pgpid(bool is_status_request)
 		/*
 		 * The Linux Standard Base Core Specification 3.1 says this should
 		 * return '4, program or service status is unknown'
-		 * https://refspecs.linuxbase.org/LSB_3.1.0/LSB-Core-generic/LSB-Core-g
-		 * eneric/iniscrptact.html
+		 * https://refspecs.linuxbase.org/LSB_3.1.0/LSB-Core-generic/LSB-Core-generic/iniscrptact.html
 		 */
 		exit(is_status_request ? 4 : 1);
 	}
@@ -1331,8 +1330,7 @@ do_status(void)
 	/*
 	 * The Linux Standard Base Core Specification 3.1 says this should return
 	 * '3, program is not running'
-	 * https://refspecs.linuxbase.org/LSB_3.1.0/LSB-Core-generic/LSB-Core-gener
-	 * ic/iniscrptact.html
+	 * https://refspecs.linuxbase.org/LSB_3.1.0/LSB-Core-generic/LSB-Core-generic/iniscrptact.html
 	 */
 	exit(3);
 }
diff --git a/src/bin/psql/copy.c b/src/bin/psql/copy.c
index cd2e656911..724ea9211a 100644
--- a/src/bin/psql/copy.c
+++ b/src/bin/psql/copy.c
@@ -629,8 +629,7 @@ handleCopyIn(PGconn *conn, FILE *copystream, bool isbinary, PGresult **res)
 					/*
 					 * This code erroneously assumes '\.' on a line alone
 					 * inside a quoted CSV string terminates the \copy.
-					 * http://www.postgresql.org/message-id/E1TdNVQ-0001ju-GO@w
-					 * rigleys.postgresql.org
+					 * http://www.postgresql.org/message-id/E1TdNVQ-0001ju-GO@wrigleys.postgresql.org
 					 */
 					if (strcmp(buf, "\\.\n") == 0 ||
 						strcmp(buf, "\\.\r\n") == 0)