diff --git a/Kernel/Process.cpp b/Kernel/Process.cpp
index 094daf6a417..195cc64aff0 100644
--- a/Kernel/Process.cpp
+++ b/Kernel/Process.cpp
@@ -2334,21 +2334,21 @@ pid_t Process::sys$waitpid(pid_t waitee, int* wstatus, int options)
     return waitee_pid;
 }
 
-bool Process::validate_read_from_kernel(VirtualAddress vaddr, ssize_t size) const
+bool Process::validate_read_from_kernel(VirtualAddress vaddr, size_t size) const
 {
     if (vaddr.is_null())
         return false;
     return MM.validate_kernel_read(*this, vaddr, size);
 }
 
-bool Process::validate_read(const void* address, ssize_t size) const
+bool Process::validate_read(const void* address, size_t size) const
 {
     if (!size)
         return false;
     return MM.validate_user_read(*this, VirtualAddress(address), size);
 }
 
-bool Process::validate_write(void* address, ssize_t size) const
+bool Process::validate_write(void* address, size_t size) const
 {
     if (!size)
         return false;
diff --git a/Kernel/Process.h b/Kernel/Process.h
index 647c63cc809..0e05096c7fd 100644
--- a/Kernel/Process.h
+++ b/Kernel/Process.h
@@ -326,10 +326,10 @@ public:
     u32 m_ticks_in_user_for_dead_children { 0 };
     u32 m_ticks_in_kernel_for_dead_children { 0 };
 
-    bool validate_read_from_kernel(VirtualAddress, ssize_t) const;
+    bool validate_read_from_kernel(VirtualAddress, size_t) const;
 
-    bool validate_read(const void*, ssize_t) const;
-    bool validate_write(void*, ssize_t) const;
+    bool validate_read(const void*, size_t) const;
+    bool validate_write(void*, size_t) const;
     template<typename T>
     bool validate_read_typed(T* value, size_t count = 1) { return validate_read(value, sizeof(T) * count); }
     template<typename T>