diff --git a/build.zig b/build.zig
index 8922857..bcf1cd8 100644
--- a/build.zig
+++ b/build.zig
@@ -73,7 +73,7 @@ pub fn build(b: *std.Build) !void {
 }
 
 const kalign_lib_sources = [_][]const u8{
-    "lib/src/strnlen_compat.c",
+    // "lib/src/strnlen_compat.c",
     "lib/src/test.c",
     "lib/src/tldevel.c",
     "lib/src/tlmisc.c",
diff --git a/lib/src/msa_check.c b/lib/src/msa_check.c
index 676a100..fe49e50 100644
--- a/lib/src/msa_check.c
+++ b/lib/src/msa_check.c
@@ -3,7 +3,7 @@
 #include <string.h>
 #include <ctype.h>
 
-#include "strnlen_compat.h"
+/* #include "strnlen_compat.h" */
 
 #include "msa_struct.h"
 
diff --git a/lib/src/msa_io.c b/lib/src/msa_io.c
index f6492f0..68c2ece 100644
--- a/lib/src/msa_io.c
+++ b/lib/src/msa_io.c
@@ -4,7 +4,7 @@
 #include <ctype.h>
 #include <time.h>
 
-#include "strnlen_compat.h"
+/* #include "strnlen_compat.h" */
 #include "tldevel.h"
 #include "tlmisc.h"
 #include "esl_stopwatch.h"
diff --git a/lib/src/tlmisc.c b/lib/src/tlmisc.c
index bbb20db..e6fd284 100644
--- a/lib/src/tlmisc.c
+++ b/lib/src/tlmisc.c
@@ -5,7 +5,7 @@
 #include <stdio.h>
 #include <string.h>
 
-#include "strnlen_compat.h"
+/* #include "strnlen_compat.h" */
 
 #define TLMISC_IMPORT
 #include "tlmisc.h"