diff --git a/inc/errno.h b/inc/errno.h
index d1eb6bd..d0c52aa 100644
--- a/inc/errno.h
+++ b/inc/errno.h
@@ -1,12 +1,9 @@
 
 #pragma once
 
-#if defined (_MSC_VER)
-    #define _Thread_local __declspec(thread)
-#endif
-
 #define EDOM   1
 #define EILSEQ 2
 #define ERANGE 3
 
+// TODO: figure out why _Thread_local doesn't work
 extern _Thread_local int errno;
diff --git a/inc/float.h b/inc/float.h
index 21bc7ef..78c5322 100644
--- a/inc/float.h
+++ b/inc/float.h
@@ -19,7 +19,7 @@
 #define FLT_HAS_SUBNORM  1
 
 #define DBL_DECIMAL_DIG  10
-#define DBL_MIN          0x1.0000000000000p-1021
+#define DBL_MIN          0x1.0000000000000p-1022
 #define DBL_MAX          0x1.fffffffffffffp+1023
 #define DBL_TRUE_MIN     0x1.0000000000000p-1074
 #define DBL_EPSILON      0x1.0000000000001p+0
diff --git a/inc/threads.h b/inc/threads.h
index 8acbf32..b533268 100644
--- a/inc/threads.h
+++ b/inc/threads.h
@@ -1,9 +1,5 @@
 #pragma once
 
-#if defined(_WIN32)
-    #define _Thread_local __declspec(thread)
-#endif
-
 #define thread_local _Thread_local
 
 #define ONCE_FLAG_INIT      1
diff --git a/test.cmd b/test.cmd
index 09d65ed..a1c4583 100644
--- a/test.cmd
+++ b/test.cmd
@@ -1,2 +1,2 @@
 
-clang test\%1 utf8.obj -Iinc -g -lciabatta.lib -nostdlib
\ No newline at end of file
+clang -std=c11 test\%1 utf8.obj -Iinc -g -lciabatta.lib -nostdlib
\ No newline at end of file