diff --git a/include/spinlock/anderson.h b/include/spinlock/anderson.h
index 8b2cf87..1386b18 100644
--- a/include/spinlock/anderson.h
+++ b/include/spinlock/anderson.h
@@ -162,4 +162,3 @@ ck_spinlock_anderson_unlock(struct ck_spinlock_anderson *lock,
 }
 #endif /* CK_F_SPINLOCK_ANDERSON */
 #endif /* _CK_SPINLOCK_ANDERSON_H */
-
diff --git a/include/spinlock/cas.h b/include/spinlock/cas.h
index bda2bb3..ca087e3 100644
--- a/include/spinlock/cas.h
+++ b/include/spinlock/cas.h
@@ -118,4 +118,3 @@ CK_ELIDE_TRYLOCK_PROTOTYPE(ck_spinlock_cas, ck_spinlock_cas_t,
 
 #endif /* CK_F_SPINLOCK_CAS */
 #endif /* _CK_SPINLOCK_CAS_H */
-
diff --git a/include/spinlock/clh.h b/include/spinlock/clh.h
index 4252ec3..b066244 100644
--- a/include/spinlock/clh.h
+++ b/include/spinlock/clh.h
@@ -114,4 +114,3 @@ ck_spinlock_clh_unlock(struct ck_spinlock_clh **thread)
 }
 #endif /* CK_F_SPINLOCK_CLH */
 #endif /* _CK_SPINLOCK_CLH_H */
-
diff --git a/include/spinlock/dec.h b/include/spinlock/dec.h
index 350bbf2..35f44c1 100644
--- a/include/spinlock/dec.h
+++ b/include/spinlock/dec.h
@@ -140,4 +140,3 @@ CK_ELIDE_TRYLOCK_PROTOTYPE(ck_spinlock_dec, ck_spinlock_dec_t,
 
 #endif /* CK_F_SPINLOCK_DEC */
 #endif /* _CK_SPINLOCK_DEC_H */
-
diff --git a/include/spinlock/fas.h b/include/spinlock/fas.h
index 6886e35..1774919 100644
--- a/include/spinlock/fas.h
+++ b/include/spinlock/fas.h
@@ -115,4 +115,3 @@ CK_ELIDE_TRYLOCK_PROTOTYPE(ck_spinlock_fas, ck_spinlock_fas_t,
 
 #endif /* CK_F_SPINLOCK_FAS */
 #endif /* _CK_SPINLOCK_FAS_H */
-
diff --git a/include/spinlock/hclh.h b/include/spinlock/hclh.h
index dbae512..0838edb 100644
--- a/include/spinlock/hclh.h
+++ b/include/spinlock/hclh.h
@@ -142,4 +142,3 @@ ck_spinlock_hclh_unlock(struct ck_spinlock_hclh **thread)
 }
 #endif /* CK_F_SPINLOCK_HCLH */
 #endif /* _CK_SPINLOCK_HCLH_H */
-
diff --git a/include/spinlock/mcs.h b/include/spinlock/mcs.h
index 54cddca..f0d0e77 100644
--- a/include/spinlock/mcs.h
+++ b/include/spinlock/mcs.h
@@ -146,4 +146,3 @@ ck_spinlock_mcs_unlock(struct ck_spinlock_mcs **queue, struct ck_spinlock_mcs *n
 }
 #endif /* CK_F_SPINLOCK_MCS */
 #endif /* _CK_SPINLOCK_MCS_H */
-
diff --git a/include/spinlock/ticket.h b/include/spinlock/ticket.h
index 703feb7..de68851 100644
--- a/include/spinlock/ticket.h
+++ b/include/spinlock/ticket.h
@@ -295,4 +295,3 @@ CK_ELIDE_TRYLOCK_PROTOTYPE(ck_spinlock_ticket, ck_spinlock_ticket_t,
 
 #endif /* CK_F_SPINLOCK_TICKET */
 #endif /* _CK_SPINLOCK_TICKET_H */
-