diff --git a/regressions/ck_hs/benchmark/apply.c b/regressions/ck_hs/benchmark/apply.c
index ca4a3da..e8b2294 100644
--- a/regressions/ck_hs/benchmark/apply.c
+++ b/regressions/ck_hs/benchmark/apply.c
@@ -6,9 +6,9 @@
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
- * 1. Redistributions of source code must retain the above copyrighs
+ * 1. Redistributions of source code must retain the above copyrights
  *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyrighs
+ * 2. Redistributions in binary form must reproduce the above copyrights
  *    notice, this list of conditions and the following disclaimer in the
  *    documentation and/or other materials provided with the distribution.
  *
diff --git a/regressions/ck_hs/benchmark/parallel_bytestring.c b/regressions/ck_hs/benchmark/parallel_bytestring.c
index 3c36851..3275b05 100644
--- a/regressions/ck_hs/benchmark/parallel_bytestring.c
+++ b/regressions/ck_hs/benchmark/parallel_bytestring.c
@@ -5,9 +5,9 @@
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
- * 1. Redistributions of source code must retain the above copyrighs
+ * 1. Redistributions of source code must retain the above copyrights
  *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyrighs
+ * 2. Redistributions in binary form must reproduce the above copyrights
  *    notice, this list of conditions and the following disclaimer in the
  *    documentation and/or other materials provided with the distribution.
  *
diff --git a/regressions/ck_hs/benchmark/serial.c b/regressions/ck_hs/benchmark/serial.c
index ac4caff..5b4cd50 100644
--- a/regressions/ck_hs/benchmark/serial.c
+++ b/regressions/ck_hs/benchmark/serial.c
@@ -5,9 +5,9 @@
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
- * 1. Redistributions of source code must retain the above copyrighs
+ * 1. Redistributions of source code must retain the above copyrights
  *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyrighs
+ * 2. Redistributions in binary form must reproduce the above copyrights
  *    notice, this list of conditions and the following disclaimer in the
  *    documentation and/or other materials provided with the distribution.
  *
diff --git a/regressions/ck_rhs/benchmark/parallel_bytestring.c b/regressions/ck_rhs/benchmark/parallel_bytestring.c
index 017222d..1c2d244 100644
--- a/regressions/ck_rhs/benchmark/parallel_bytestring.c
+++ b/regressions/ck_rhs/benchmark/parallel_bytestring.c
@@ -5,9 +5,9 @@
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
- * 1. Redistributions of source code must retain the above copyrighs
+ * 1. Redistributions of source code must retain the above copyrights
  *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyrighs
+ * 2. Redistributions in binary form must reproduce the above copyrights
  *    notice, this list of conditions and the following disclaimer in the
  *    documentation and/or other materials provided with the distribution.
  *
diff --git a/regressions/ck_rhs/benchmark/serial.c b/regressions/ck_rhs/benchmark/serial.c
index 18fa892..9689d2c 100644
--- a/regressions/ck_rhs/benchmark/serial.c
+++ b/regressions/ck_rhs/benchmark/serial.c
@@ -5,9 +5,9 @@
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
- * 1. Redistributions of source code must retain the above copyrighs
+ * 1. Redistributions of source code must retain the above copyrights
  *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyrighs
+ * 2. Redistributions in binary form must reproduce the above copyrights
  *    notice, this list of conditions and the following disclaimer in the
  *    documentation and/or other materials provided with the distribution.
  *
diff --git a/regressions/ck_rhs/validate/serial.c b/regressions/ck_rhs/validate/serial.c
index ef9365f..92caf18 100644
--- a/regressions/ck_rhs/validate/serial.c
+++ b/regressions/ck_rhs/validate/serial.c
@@ -5,9 +5,9 @@
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
- * 1. Redistributions of source code must retain the above copyrighs
+ * 1. Redistributions of source code must retain the above copyrights
  *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyrighs
+ * 2. Redistributions in binary form must reproduce the above copyrights
  *    notice, this list of conditions and the following disclaimer in the
  *    documentation and/or other materials provided with the distribution.
  *