diff --git a/src/system/boot/loader/file_systems/fat/CachedBlock.cpp b/src/system/boot/loader/file_systems/fat/CachedBlock.cpp
index 55b07a577c..1078f7a328 100644
--- a/src/system/boot/loader/file_systems/fat/CachedBlock.cpp
+++ b/src/system/boot/loader/file_systems/fat/CachedBlock.cpp
@@ -15,8 +15,8 @@
 #include <util/kernel_cpp.h>
 
 #include <stdlib.h>
-#include <unistd.h>
 #include <string.h>
+#include <unistd.h>
 
 
 using namespace FATFS;
@@ -47,28 +47,3 @@ CachedBlock::~CachedBlock()
 }
 
 
-void
-CachedBlock::Unset()
-{
-	fBlockNumber = -1;
-}
-
-
-uint8 *
-CachedBlock::SetTo(off_t block)
-{
-	if (block == fBlockNumber)
-		return fBlock;
-	if (fBlock == NULL) {
-		fBlock = (uint8 *)malloc(BlockSize());
-		if (fBlock == NULL)
-			return NULL;
-	}
-
-	fBlockNumber = block;
-	if (read_pos(fVolume.Device(), block << BlockShift(), fBlock, BlockSize()) < (ssize_t)BlockSize())
-		return NULL;
-
-	return fBlock;
-}
-
diff --git a/src/system/boot/loader/file_systems/fat/CachedBlock.h b/src/system/boot/loader/file_systems/fat/CachedBlock.h
index 510e644e1d..4988b42615 100644
--- a/src/system/boot/loader/file_systems/fat/CachedBlock.h
+++ b/src/system/boot/loader/file_systems/fat/CachedBlock.h
@@ -10,6 +10,8 @@
 
 #include <SupportDefs.h>
 #include <sys/stat.h>
+#include <stdlib.h>
+#include <unistd.h>
 
 #include "Volume.h"
 
@@ -36,6 +38,34 @@ class CachedBlock {
 		uint8	*fBlock;
 };
 
+
+inline void
+CachedBlock::Unset()
+{
+	fBlockNumber = -1;
+}
+
+
+inline uint8 *
+CachedBlock::SetTo(off_t block)
+{
+	if (block == fBlockNumber)
+		return fBlock;
+	if (fBlock == NULL) {
+		fBlock = (uint8 *)malloc(BlockSize());
+		if (fBlock == NULL)
+			return NULL;
+	}
+
+	fBlockNumber = block;
+	if (read_pos(fVolume.Device(), block << BlockShift(), fBlock, BlockSize()) < (ssize_t)BlockSize())
+		return NULL;
+
+	return fBlock;
+}
+
+
 }	// namespace FATFS
 
+
 #endif	/* CACHED_BLOCK_H */