diff --git a/sys/powerpc/include/_stdint.h b/sys/powerpc/include/_stdint.h
index 385c3338980..6eb988f86ed 100644
--- a/sys/powerpc/include/_stdint.h
+++ b/sys/powerpc/include/_stdint.h
@@ -173,14 +173,14 @@
 
 #ifdef __LP64__
 /* Limits of ptrdiff_t. */
-#define	PTRDIFF_MIN	INT64_MIN	
+#define	PTRDIFF_MIN	INT64_MIN
 #define	PTRDIFF_MAX	INT64_MAX
 
 /* Limit of size_t. */
 #define	SIZE_MAX	UINT64_MAX
 #else
 /* Limits of ptrdiff_t. */
-#define	PTRDIFF_MIN	INT32_MIN	
+#define	PTRDIFF_MIN	INT32_MIN
 #define	PTRDIFF_MAX	INT32_MAX
 
 /* Limit of size_t. */
diff --git a/sys/riscv/include/_stdint.h b/sys/riscv/include/_stdint.h
index 9df000b0eac..48080ecfe2c 100644
--- a/sys/riscv/include/_stdint.h
+++ b/sys/riscv/include/_stdint.h
@@ -137,7 +137,7 @@
  * 7.18.3  Limits of other integer types
  */
 /* Limits of ptrdiff_t. */
-#define	PTRDIFF_MIN	INT64_MIN	
+#define	PTRDIFF_MIN	INT64_MIN
 #define	PTRDIFF_MAX	INT64_MAX
 
 /* Limits of sig_atomic_t. */
diff --git a/sys/x86/include/_stdint.h b/sys/x86/include/_stdint.h
index 1b8523bf656..2dea911b5c8 100644
--- a/sys/x86/include/_stdint.h
+++ b/sys/x86/include/_stdint.h
@@ -163,7 +163,7 @@
  */
 #ifdef	__LP64__
 /* Limits of ptrdiff_t. */
-#define	PTRDIFF_MIN	INT64_MIN	
+#define	PTRDIFF_MIN	INT64_MIN
 #define	PTRDIFF_MAX	INT64_MAX
 
 /* Limits of sig_atomic_t. */