diff --git a/src/liblzma/check/crc32_x86.S b/src/liblzma/check/crc32_x86.S
index 7814bec..4f395df 100644
--- a/src/liblzma/check/crc32_x86.S
+++ b/src/liblzma/check/crc32_x86.S
@@ -305,9 +305,9 @@ LZMA_CRC32:
 
 /*
  * This is needed to support non-executable stack. It's ugly to
- * use __linux__ here, but I don't know a way to detect when
+ * use __FreeBSD__ and __linux__ here, but I don't know a way to detect when
  * we are using GNU assembler.
  */
-#if defined(__ELF__) && defined(__linux__)
+#if defined(__ELF__) && (defined(__FreeBSD__) || defined(__linux__))
 	.section	.note.GNU-stack,"",@progbits
 #endif
diff --git a/src/liblzma/check/crc64_x86.S b/src/liblzma/check/crc64_x86.S
index 7ee08f6..9aecf58 100644
--- a/src/liblzma/check/crc64_x86.S
+++ b/src/liblzma/check/crc64_x86.S
@@ -288,9 +288,9 @@ LZMA_CRC64:
 
 /*
  * This is needed to support non-executable stack. It's ugly to
- * use __linux__ here, but I don't know a way to detect when
+ * use __FreeBSD__ and __linux__ here, but I don't know a way to detect when
  * we are using GNU assembler.
  */
-#if defined(__ELF__) && defined(__linux__)
+#if defined(__ELF__) && (defined(__FreeBSD__) || defined(__linux__))
 	.section	.note.GNU-stack,"",@progbits
 #endif