diff --git a/src/gmio_core/global.h b/src/gmio_core/global.h
index 270febe..cbe043d 100644
--- a/src/gmio_core/global.h
+++ b/src/gmio_core/global.h
@@ -19,22 +19,22 @@
 #define GMIO_GLOBAL_H
 
 #if defined(WIN64) || defined(_WIN64) || defined(__WIN64__) \
-    || defined(WIN32) || defined(_WIN32) || defined(__WIN32__) || defined(__NT__)
-# define GMIO_DECL_EXPORT __declspec(dllexport)
-# define GMIO_DECL_IMPORT __declspec(dllimport)
+      || defined(WIN32) || defined(_WIN32) || defined(__WIN32__) || defined(__NT__)
+#  define GMIO_DECL_EXPORT __declspec(dllexport)
+#  define GMIO_DECL_IMPORT __declspec(dllimport)
 #else
-# define GMIO_DECL_EXPORT
-# define GMIO_DECL_IMPORT
+#  define GMIO_DECL_EXPORT
+#  define GMIO_DECL_IMPORT
 #endif /* WIN */
 
 #ifdef GMIO_LIB_DLL
-# ifdef GMIO_LIB_MAKE_DLL
-#  define GMIO_LIB_EXPORT GMIO_DECL_EXPORT
-# else
-#  define GMIO_LIB_EXPORT GMIO_DECL_IMPORT
-# endif /* GMIO_LIB_MAKE_DLL */
+#  ifdef GMIO_LIB_MAKE_DLL
+#    define GMIO_LIB_EXPORT GMIO_DECL_EXPORT
+#  else
+#    define GMIO_LIB_EXPORT GMIO_DECL_IMPORT
+#  endif /* GMIO_LIB_MAKE_DLL */
 #else
-# define GMIO_LIB_EXPORT
+#  define GMIO_LIB_EXPORT
 #endif /* GMIO_LIB_DLL */
 
 /* "config.h" is generated by cmake, it should reside in the out-of-source build dir.
@@ -43,7 +43,7 @@
 #include "config.h"
 
 #ifdef GMIO_HAVE_STDINT_H
-# include <stdint.h>
+#  include <stdint.h>
 #else
 typedef char          int8_t;
 typedef unsigned char uint8_t;
@@ -65,13 +65,13 @@ typedef unsigned long long uint64_t;
 #endif /* GMIO_USE_STDINT_H */
 
 #ifdef GMIO_HAVE_STDBOOL_H
-# include <stdbool.h>
+#  include <stdbool.h>
 
 /*! Typedef for boolean type */
 typedef bool gmio_bool_t;
 
-#define GMIO_FALSE false
-#define GMIO_TRUE  true
+#  define GMIO_FALSE false
+#  define GMIO_TRUE  true
 
 #else
 /*! Typedef for boolean type */
@@ -96,21 +96,21 @@ typedef double gmio_real64_t;
 #define GMIO_UNUSED(x) (void)x;
 
 #ifndef GMIO_INLINE
-# if defined(__GNUC__)
-#  define GMIO_INLINE __inline__  /* Compatible with C90 */
-# elif defined(_MSC_VER)
-#  define GMIO_INLINE __inline
-# else
-#  define GMIO_INLINE
-# endif
+#  if defined(__GNUC__)
+#    define GMIO_INLINE __inline__  /* Compatible with C90 */
+#  elif defined(_MSC_VER)
+#    define GMIO_INLINE __inline
+#  else
+#    define GMIO_INLINE
+#  endif
 #endif /* !GMIO_INLINE */
 
 #ifdef __cplusplus
-# define GMIO_C_LINKAGE_BEGIN extern "C" {
-# define GMIO_C_LINKAGE_END   }
+#  define GMIO_C_LINKAGE_BEGIN extern "C" {
+#  define GMIO_C_LINKAGE_END   }
 #else
-# define GMIO_C_LINKAGE_BEGIN
-# define GMIO_C_LINKAGE_END
+#  define GMIO_C_LINKAGE_BEGIN
+#  define GMIO_C_LINKAGE_END
 #endif /* __cplusplus */
 
 #endif /* GMIO_GLOBAL_H */
diff --git a/src/gmio_core/internal/byte_swap.h b/src/gmio_core/internal/byte_swap.h
index 0129cd7..975ea53 100644
--- a/src/gmio_core/internal/byte_swap.h
+++ b/src/gmio_core/internal/byte_swap.h
@@ -23,7 +23,7 @@
 #include "../global.h"
 
 #ifdef GMIO_HAVE_MSVC_BUILTIN_BSWAP_FUNC
-# include <stdlib.h>
+#  include <stdlib.h>
 #endif
 
 /*! Returns \p val with the order of bytes reversed, uses compiler builtin functions if available */