diff --git a/Airport.vcxproj b/Airport.vcxproj
index 217581b..f7e824b 100644
--- a/Airport.vcxproj
+++ b/Airport.vcxproj
@@ -122,7 +122,8 @@
       </PreprocessorDefinitions>
     </ClCompile>
     <PreBuildEvent>
-      <Command>xcopy "$(SolutionDir)Toy\repl\lib*.*" "$(SolutionDir)box" /Y /I /E</Command>
+      <Command>
+      </Command>
     </PreBuildEvent>
   </ItemDefinitionGroup>
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
@@ -137,7 +138,8 @@
       <AdditionalDependencies>SDL2main.lib;SDL2.lib;SDL2_image.lib;Toy.lib;Box.lib;%(AdditionalDependencies)</AdditionalDependencies>
     </Link>
     <PreBuildEvent>
-      <Command>xcopy "$(SolutionDir)Toy\repl\lib*.*" "$(SolutionDir)box" /Y /I /E</Command>
+      <Command>
+      </Command>
     </PreBuildEvent>
   </ItemDefinitionGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
diff --git a/Box.vcxproj b/Box.vcxproj
index d740cd7..7edb6ee 100644
--- a/Box.vcxproj
+++ b/Box.vcxproj
@@ -116,6 +116,10 @@
       <AdditionalLibraryDirectories>$(SDL2Dir)\lib\x64;$(SDL2ImageDir)\lib\x64;$(SolutionDir)out\$(Configuration)\;%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
       <AdditionalDependencies>SDL2.lib;SDL2_image.lib;Toy.lib;%(AdditionalDependencies)</AdditionalDependencies>
     </Link>
+    <PreBuildEvent>
+      <Command>xcopy "$(SolutionDir)Toy\repl\lib*.*" "$(SolutionDir)box" /Y /I /E
+xcopy "$(SolutionDir)Toy\repl\repl_tools.*" "$(SolutionDir)box" /Y /I /E</Command>
+    </PreBuildEvent>
   </ItemDefinitionGroup>
   <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'">
     <ClCompile>
@@ -127,6 +131,10 @@
       <AdditionalLibraryDirectories>$(SDL2Dir)\lib\x64;$(SDL2ImageDir)\lib\x64;$(SolutionDir)out\$(Configuration)\;%(AdditionalLibraryDirectories)</AdditionalLibraryDirectories>
       <AdditionalDependencies>SDL2.lib;SDL2_image.lib;Toy.lib;%(AdditionalDependencies)</AdditionalDependencies>
     </Link>
+    <PreBuildEvent>
+      <Command>xcopy "$(SolutionDir)Toy\repl\lib*.*" "$(SolutionDir)box" /Y /I /E
+xcopy "$(SolutionDir)Toy\repl\repl_tools.*" "$(SolutionDir)box" /Y /I /E</Command>
+    </PreBuildEvent>
   </ItemDefinitionGroup>
   <ItemGroup>
     <ClCompile Include="box\box_common.c" />
diff --git a/box/repl_tools.c b/box/repl_tools.c
index 2d13715..0b46080 100644
--- a/box/repl_tools.c
+++ b/box/repl_tools.c
@@ -14,7 +14,7 @@
 #include <stdlib.h>
 
 //IO functions
-const char* Toy_readFile(const char* path, size_t* fileSize) {
+const unsigned char* Toy_readFile(const char* path, size_t* fileSize) {
 	FILE* file = fopen(path, "rb");
 
 	if (file == NULL) {
@@ -26,14 +26,14 @@ const char* Toy_readFile(const char* path, size_t* fileSize) {
 	*fileSize = ftell(file);
 	rewind(file);
 
-	char* buffer = (char*)malloc(*fileSize + 1);
+	unsigned char* buffer = (unsigned char*)malloc(*fileSize + 1);
 
 	if (buffer == NULL) {
 		fprintf(stderr, TOY_CC_ERROR "Not enough memory to read \"%s\"\n" TOY_CC_RESET, path);
 		return NULL;
 	}
 
-	size_t bytesRead = fread(buffer, sizeof(char), *fileSize, file);
+	size_t bytesRead = fread(buffer, sizeof(unsigned char), *fileSize, file);
 
 	buffer[*fileSize] = '\0'; //NOTE: fread doesn't append this
 
@@ -120,7 +120,7 @@ void Toy_runBinary(const unsigned char* tb, size_t size) {
 
 void Toy_runBinaryFile(const char* fname) {
 	size_t size = 0; //not used
-	const unsigned char* tb = (const unsigned char*)Toy_readFile(fname, &size);
+	const unsigned char* tb = Toy_readFile(fname, &size);
 	if (!tb) {
 		return;
 	}
@@ -140,7 +140,7 @@ void Toy_runSource(const char* source) {
 
 void Toy_runSourceFile(const char* fname) {
 	size_t size = 0; //not used
-	const char* source = Toy_readFile(fname, &size);
+	const char* source = (const char*)Toy_readFile(fname, &size);
 	if (!source) {
 		return;
 	}
diff --git a/box/repl_tools.h b/box/repl_tools.h
index 819f752..235cef8 100644
--- a/box/repl_tools.h
+++ b/box/repl_tools.h
@@ -2,7 +2,7 @@
 
 #include "toy_common.h"
 
-const char* Toy_readFile(const char* path, size_t* fileSize);
+const unsigned char* Toy_readFile(const char* path, size_t* fileSize);
 int Toy_writeFile(const char* path, const unsigned char* bytes, size_t size);
 
 const unsigned char* Toy_compileString(const char* source, size_t* size);