diff --git a/src/core/gdbstub/gdbstub.cpp b/src/core/gdbstub/gdbstub.cpp
index 281ba3d62e..c8012dda27 100644
--- a/src/core/gdbstub/gdbstub.cpp
+++ b/src/core/gdbstub/gdbstub.cpp
@@ -313,7 +313,12 @@ static void IntToGdbHex(u8* dest, u32 v) {
     }
 }
 
-u32 GdbHexToInt(const u8* src) {
+/**
+ * Convert a gdb-formatted hex string into a u32.
+ *
+ * @param src Pointer to hex string.
+ */
+static u32 GdbHexToInt(const u8* src) {
     u32 output = 0;
 
     for (int i = 0; i < 8; i += 2) {
@@ -337,7 +342,12 @@ static void LongToGdbHex(u8* dest, u64 v) {
     }
 }
 
-u64 GdbHexToLong(const u8* src) {
+/**
+ * Convert a gdb-formatted hex string into a u64.
+ *
+ * @param src Pointer to hex string.
+ */
+static u64 GdbHexToLong(const u8* src) {
     u64 output = 0;
 
     for (int i = 0; i < 16; i += 2) {
diff --git a/src/core/gdbstub/gdbstub.h b/src/core/gdbstub/gdbstub.h
index e11d31324b..70aa0e2dbf 100644
--- a/src/core/gdbstub/gdbstub.h
+++ b/src/core/gdbstub/gdbstub.h
@@ -111,25 +111,11 @@ void SetCpuStepFlag(bool is_step);
 void SendTrap(Kernel::Thread* thread, int trap);
 
 /**
+u32 HexToInt(const u8* src, std::size_t len) {
  * Converts input hex string characters into an array of equivalent of u8 bytes.
  *
  * @param src Pointer to array of output hex string characters.
  * @param len Length of src array.
  */
 u32 HexToInt(const u8* src, std::size_t len);
-
-/**
- * Convert a gdb-formatted hex string into a u32.
- *
- * @param src Pointer to hex string.
- */
-u32 GdbHexToInt(const u8* src);
-
-/**
- * Convert a gdb-formatted hex string into a u64.
- *
- * @param src Pointer to hex string.
- */
-u64 GdbHexToLong(const u8* src);
-
 } // namespace GDBStub