diff --git a/src/gb/gb.h b/src/gb/gb.h
index 013b39a4d..de7af93c0 100644
--- a/src/gb/gb.h
+++ b/src/gb/gb.h
@@ -930,19 +930,13 @@ GB_DEF void gb_semaphore_wait   (gbSemaphore *s);
 
 
 // Mutex
-// TODO(bill): Should this be replaced with a CRITICAL_SECTION on win32 or is the better?
+typedef struct gbMutex {
 #if defined(GB_SYSTEM_WINDOWS)
-typedef struct gbMutex {
 	CRITICAL_SECTION win32_critical_section;
-} gbMutex;
 #else
-typedef struct gbMutex {
-	gbSemaphore semaphore;
-	gbAtomic32  counter;
-	gbAtomic32  owner;
-	i32         recursion;
-} gbMutex;
+	pthread_mutex_t pthread_mutex;
 #endif
+} gbMutex;
 
 GB_DEF void gb_mutex_init    (gbMutex *m);
 GB_DEF void gb_mutex_destroy (gbMutex *m);
@@ -4608,12 +4602,7 @@ gb_inline void gb_mutex_init(gbMutex *m) {
 #if defined(GB_SYSTEM_WINDOWS)
 	InitializeCriticalSection(&m->win32_critical_section);
 #else
-// NOTE(bill): THIS IS FUCKING AWESOME THAT THIS "MUTEX" IS FAST AND RECURSIVE TOO!
-// NOTE(bill): WHO THE FUCK NEEDS A NORMAL MUTEX NOW?!?!?!?!
-	gb_atomic32_store(&m->counter, 0);
-	gb_atomic32_store(&m->owner, gb_thread_current_id());
-	gb_semaphore_init(&m->semaphore);
-	m->recursion = 0;
+	pthread_mutex_init(&m->pthread_mutex, NULL);
 #endif
 }
 
@@ -4621,7 +4610,7 @@ gb_inline void gb_mutex_destroy(gbMutex *m) {
 #if defined(GB_SYSTEM_WINDOWS)
 	DeleteCriticalSection(&m->win32_critical_section);
 #else
-	gb_semaphore_destroy(&m->semaphore);
+	pthread_mutex_destroy(&m->pthread_mutex);
 #endif
 }
 
@@ -4629,15 +4618,7 @@ gb_inline void gb_mutex_lock(gbMutex *m) {
 #if defined(GB_SYSTEM_WINDOWS)
 	EnterCriticalSection(&m->win32_critical_section);
 #else
-	i32 thread_id = cast(i32)gb_thread_current_id();
-	if (gb_atomic32_fetch_add(&m->counter, 1) > 0) {
-		if (thread_id != gb_atomic32_load(&m->owner)) {
-			gb_semaphore_wait(&m->semaphore);
-		}
-	}
-
-	gb_atomic32_store(&m->owner, thread_id);
-	m->recursion++;
+	pthread_mutex_lock(&m->pthread_mutex);
 #endif
 }
 
@@ -4645,22 +4626,7 @@ gb_inline b32 gb_mutex_try_lock(gbMutex *m) {
 #if defined(GB_SYSTEM_WINDOWS)
 	return TryEnterCriticalSection(&m->win32_critical_section) != 0;
 #else
-	i32 thread_id = cast(i32)gb_thread_current_id();
-	if (gb_atomic32_load(&m->owner) == thread_id) {
-		gb_atomic32_fetch_add(&m->counter, 1);
-	} else {
-		i32 expected = 0;
-		if (gb_atomic32_load(&m->counter) != 0) {
-			return false;
-		}
-		if (!gb_atomic32_compare_exchange(&m->counter, expected, 1)) {
-			return false;
-		}
-		gb_atomic32_store(&m->owner, thread_id);
-	}
-
-	m->recursion++;
-	return true;
+	return pthread_mutex_trylock(&m->pthread_mutex) == 0;
 #endif
 }
 
@@ -4668,19 +4634,7 @@ gb_inline void gb_mutex_unlock(gbMutex *m) {
 #if defined(GB_SYSTEM_WINDOWS)
 	LeaveCriticalSection(&m->win32_critical_section);
 #else
-	i32 recursion;
-	i32 thread_id = cast(i32)gb_thread_current_id();
-
-	recursion = --m->recursion;
-	if (recursion == 0) {
-		gb_atomic32_store(&m->owner, thread_id);
-	}
-
-	if (gb_atomic32_fetch_add(&m->counter, -1) > 1) {
-		if (recursion == 0) {
-			gb_semaphore_release(&m->semaphore);
-		}
-	}
+	pthread_mutex_unlock(&m->pthread_mutex);
 #endif
 }
 
diff --git a/src/parser.cpp b/src/parser.cpp
index b9ff2554c..2667289eb 100644
--- a/src/parser.cpp
+++ b/src/parser.cpp
@@ -83,7 +83,8 @@ struct Parser {
 	gbAtomic32          import_index;
 	isize               total_token_count;
 	isize               total_line_count;
-	gbMutex             mutex;
+	gbMutex             file_add_mutex;
+	gbMutex             file_decl_mutex;
 };
 
 enum ProcTag {
@@ -4812,7 +4813,8 @@ void destroy_ast_file(AstFile *f) {
 bool init_parser(Parser *p) {
 	array_init(&p->files, heap_allocator());
 	array_init(&p->imports, heap_allocator());
-	gb_mutex_init(&p->mutex);
+	gb_mutex_init(&p->file_add_mutex);
+	gb_mutex_init(&p->file_decl_mutex);
 	return true;
 }
 
@@ -4828,14 +4830,12 @@ void destroy_parser(Parser *p) {
 #endif
 	array_free(&p->files);
 	array_free(&p->imports);
-	gb_mutex_destroy(&p->mutex);
+	gb_mutex_destroy(&p->file_add_mutex);
+	gb_mutex_destroy(&p->file_decl_mutex);
 }
 
 // NOTE(bill): Returns true if it's added
 bool try_add_import_path(Parser *p, String path, String rel_path, TokenPos pos) {
-	gb_mutex_lock(&p->mutex);
-	defer (gb_mutex_unlock(&p->mutex));
-
 	if (build_context.generate_docs) {
 		return false;
 	}
@@ -4923,6 +4923,7 @@ void parse_setup_file_decls(Parser *p, AstFile *f, String base_dir, Array<AstNod
 					String file_str = id->relpath.string;
 					gbAllocator allocator = heap_allocator(); // TODO(bill): Change this allocator
 					String import_file = {};
+					String rel_path = {};
 
 					if (!is_import_path_valid(file_str)) {
 						if (id->is_import) {
@@ -4936,7 +4937,11 @@ void parse_setup_file_decls(Parser *p, AstFile *f, String base_dir, Array<AstNod
 					}
 
 
-					String rel_path = get_fullpath_relative(allocator, base_dir, file_str);
+
+					gb_mutex_lock(&p->file_decl_mutex);
+					defer (gb_mutex_unlock(&p->file_decl_mutex));
+
+					rel_path = get_fullpath_relative(allocator, base_dir, file_str);
 					import_file = rel_path;
 					if (!gb_file_exists(cast(char *)rel_path.text)) { // NOTE(bill): This should be null terminated
 						String abs_path = get_fullpath_core(allocator, file_str);
@@ -5039,13 +5044,11 @@ ParseFileError parse_import(Parser *p, ImportedFile imported_file) {
 	}
 	parse_file(p, &file);
 
-	{
-		gb_mutex_lock(&p->mutex);
-		file.id = imported_file.index;
-		array_add(&p->files, file);
-		p->total_line_count += file.tokenizer.line_count;
-		gb_mutex_unlock(&p->mutex);
-	}
+	gb_mutex_lock(&p->file_add_mutex);
+	file.id = imported_file.index;
+	array_add(&p->files, file);
+	p->total_line_count += file.tokenizer.line_count;
+	gb_mutex_unlock(&p->file_add_mutex);
 
 
 	return ParseFile_None;