diff --git a/src/headers/linuxAmd64/string.ph b/src/headers/linuxAmd64/string.ph
index 7e9f4c6..b7b7070 100644
--- a/src/headers/linuxAmd64/string.ph
+++ b/src/headers/linuxAmd64/string.ph
@@ -5,4 +5,7 @@ header function concatenate (stringA: String, stringB: String): String;
 header function getIndex (string: String, index: Int): String;
 header function setIndex (string: String, index: Int, character: String);
 
+header function getIndexByte (string: String, index: Int): Int;
+header function setIndexByte (string: String, index: Int, value: Int);
+
 header function getLength (string: String): Int;
diff --git a/src/platforms/amd64/linux/string.c b/src/platforms/amd64/linux/string.c
index 425b15d..7b49873 100644
--- a/src/platforms/amd64/linux/string.c
+++ b/src/platforms/amd64/linux/string.c
@@ -45,6 +45,19 @@ void setIndex (const String string, const UInt index, const String character)
     newDataArray[index] = character->data[0];
 }
 
+Int getIndexByte (const String string, const UInt index) asm ("\"Standard.String~getIndexByte\"");
+Int getIndexByte (const String string, const UInt index)
+{
+    return createString(string->data[index], 1);
+}
+
+void setIndexByte (const String string, const UInt index, const Int value) asm ("\"Standard.String~setIndexByte\"");
+void setIndexByte (const String string, const UInt index, const Int value)
+{
+    UInt8* newDataArray = string->data;
+    newDataArray[index] = value;
+}
+
 UInt getLength (const String string) asm ("\"Standard.String~getLength\"");
 UInt getLength (const String string)
 {
diff --git a/src/platforms/amd64/linux/string.h b/src/platforms/amd64/linux/string.h
index 57e156a..2f32aad 100644
--- a/src/platforms/amd64/linux/string.h
+++ b/src/platforms/amd64/linux/string.h
@@ -10,4 +10,7 @@ String concatenate (const String string1, const String string2);
 String getIndex (const String string, const UInt index);
 void setIndex (const String string, const UInt index, const String character);
 
+Int getIndexByte (const String string, const UInt index);
+void setIndexByte (const String string, const UInt index, const Int value);
+
 UInt getLength (const String string);