diff --git a/src/liblzma/api/lzma.h b/src/liblzma/api/lzma.h
index 5be9b4e3..84279211 100644
--- a/src/liblzma/api/lzma.h
+++ b/src/liblzma/api/lzma.h
@@ -232,10 +232,6 @@
 #if __GNUC__ >= 3
 #	ifndef lzma_attribute
 #		define lzma_attribute(attr) __attribute__(attr)
-#	endif
-
-#	ifndef lzma_restrict
-#		define lzma_restrict __restrict__
 #	endif
 
 	/* warn_unused_result was added in GCC 3.4. */
@@ -249,14 +245,6 @@
 #	ifndef lzma_attribute
 #		define lzma_attribute(attr)
 #	endif
-
-#	ifndef lzma_restrict
-#		if __STDC_VERSION__ >= 199901L
-#			define lzma_restrict restrict
-#		else
-#			define lzma_restrict
-#		endif
-#	endif
 #endif
 
 
diff --git a/src/liblzma/api/lzma/index.h b/src/liblzma/api/lzma/index.h
index 8d7a799f..a0469b23 100644
--- a/src/liblzma/api/lzma/index.h
+++ b/src/liblzma/api/lzma/index.h
@@ -562,9 +562,8 @@ extern LZMA_API(lzma_bool) lzma_index_iter_locate(
  *              - LZMA_MEM_ERROR
  *              - LZMA_PROG_ERROR
  */
-extern LZMA_API(lzma_ret) lzma_index_cat(lzma_index *lzma_restrict dest,
-		lzma_index *lzma_restrict src,
-		lzma_allocator *allocator)
+extern LZMA_API(lzma_ret) lzma_index_cat(
+		lzma_index *dest, lzma_index *src, lzma_allocator *allocator)
 		lzma_nothrow lzma_attr_warn_unused_result;
 
 
diff --git a/src/liblzma/api/lzma/vli.h b/src/liblzma/api/lzma/vli.h
index 8d4277f7..57e3d388 100644
--- a/src/liblzma/api/lzma/vli.h
+++ b/src/liblzma/api/lzma/vli.h
@@ -113,9 +113,8 @@ typedef uint64_t lzma_vli;
  *              - LZMA_BUF_ERROR: No output space was provided.
  *              - LZMA_PROG_ERROR: Arguments are not sane.
  */
-extern LZMA_API(lzma_ret) lzma_vli_encode(lzma_vli vli,
-		size_t *vli_pos, uint8_t *lzma_restrict out,
-		size_t *lzma_restrict out_pos, size_t out_size) lzma_nothrow;
+extern LZMA_API(lzma_ret) lzma_vli_encode(lzma_vli vli, size_t *vli_pos,
+		uint8_t *out, size_t *out_pos, size_t out_size) lzma_nothrow;
 
 
 /**
@@ -153,9 +152,9 @@ extern LZMA_API(lzma_ret) lzma_vli_encode(lzma_vli vli,
  *              - LZMA_BUF_ERROR: No input was provided.
  *              - LZMA_PROG_ERROR: Arguments are not sane.
  */
-extern LZMA_API(lzma_ret) lzma_vli_decode(lzma_vli *lzma_restrict vli,
-		size_t *vli_pos, const uint8_t *lzma_restrict in,
-		size_t *lzma_restrict in_pos, size_t in_size) lzma_nothrow;
+extern LZMA_API(lzma_ret) lzma_vli_decode(lzma_vli *vli, size_t *vli_pos,
+		const uint8_t *in, size_t *in_pos, size_t in_size)
+		lzma_nothrow;
 
 
 /**