diff --git a/src/modules/filesystem/physfs/File.cpp b/src/modules/filesystem/physfs/File.cpp
index 12be9e5ed..2eb3ca113 100644
--- a/src/modules/filesystem/physfs/File.cpp
+++ b/src/modules/filesystem/physfs/File.cpp
@@ -57,6 +57,9 @@ bool File::open(Mode mode)
 	if (mode == MODE_CLOSED)
 		return true;
 
+	if (!PHYSFS_isInit())
+		throw love::Exception("PhysFS is not initialized.");
+
 	// File must exist if read mode.
 	if ((mode == MODE_READ) && !PHYSFS_exists(filename.c_str()))
 		throw love::Exception("Could not open file %s. Does not exist.", filename.c_str());
diff --git a/src/modules/filesystem/physfs/Filesystem.cpp b/src/modules/filesystem/physfs/Filesystem.cpp
index ee0498cc7..ff9ee7b59 100644
--- a/src/modules/filesystem/physfs/Filesystem.cpp
+++ b/src/modules/filesystem/physfs/Filesystem.cpp
@@ -571,6 +571,9 @@ std::string Filesystem::getSourceBaseDirectory() const
 
 std::string Filesystem::getRealDirectory(const char *filename) const
 {
+	if (!PHYSFS_isInit())
+		throw love::Exception("PhysFS is not initialized.");
+
 	const char *dir = PHYSFS_getRealDir(filename);
 
 	if (dir == nullptr)
@@ -581,11 +584,17 @@ std::string Filesystem::getRealDirectory(const char *filename) const
 
 bool Filesystem::exists(const char *path) const
 {
+	if (!PHYSFS_isInit())
+		return false;
+
 	return PHYSFS_exists(path) != 0;
 }
 
 bool Filesystem::isDirectory(const char *dir) const
 {
+	if (!PHYSFS_isInit())
+		return false;
+
 #ifdef LOVE_USE_PHYSFS_2_1
 	PHYSFS_Stat stat = {};
 	if (PHYSFS_stat(dir, &stat))
@@ -599,11 +608,17 @@ bool Filesystem::isDirectory(const char *dir) const
 
 bool Filesystem::isFile(const char *file) const
 {
+	if (!PHYSFS_isInit())
+		return false;
+
 	return PHYSFS_exists(file) && !isDirectory(file);
 }
 
 bool Filesystem::isSymlink(const char *filename) const
 {
+	if (!PHYSFS_isInit())
+		return false;
+
 #ifdef LOVE_USE_PHYSFS_2_1
 	PHYSFS_Stat stat = {};
 	if (PHYSFS_stat(filename, &stat))
@@ -617,21 +632,29 @@ bool Filesystem::isSymlink(const char *filename) const
 
 bool Filesystem::createDirectory(const char *dir)
 {
+	if (!PHYSFS_isInit())
+		return false;
+
 	if (PHYSFS_getWriteDir() == 0 && !setupWriteDirectory())
 		return false;
 
 	if (!PHYSFS_mkdir(dir))
 		return false;
+
 	return true;
 }
 
 bool Filesystem::remove(const char *file)
 {
+	if (!PHYSFS_isInit())
+		return false;
+
 	if (PHYSFS_getWriteDir() == 0 && !setupWriteDirectory())
 		return false;
 
 	if (!PHYSFS_delete(file))
 		return false;
+
 	return true;
 }
 
@@ -669,8 +692,14 @@ void Filesystem::append(const char *filename, const void *data, int64 size) cons
 
 void Filesystem::getDirectoryItems(const char *dir, std::vector<std::string> &items)
 {
+	if (!PHYSFS_isInit())
+		return;
+
 	char **rc = PHYSFS_enumerateFiles(dir);
 
+	if (rc == nullptr)
+		return;
+
 	for (char **i = rc; *i != 0; i++)
 		items.push_back(*i);
 
@@ -681,6 +710,9 @@ int64 Filesystem::getLastModified(const char *filename) const
 {
 	PHYSFS_sint64 time = -1;
 
+	if (!PHYSFS_isInit())
+		return -1;
+
 #ifdef LOVE_USE_PHYSFS_2_1
 	PHYSFS_Stat stat = {};
 	if (PHYSFS_stat(filename, &stat))
@@ -704,6 +736,9 @@ int64 Filesystem::getSize(const char *filename) const
 
 void Filesystem::setSymlinksEnabled(bool enable)
 {
+	if (!PHYSFS_isInit())
+		return;
+
 	if (!enable)
 	{
 		PHYSFS_Version version = {};
@@ -720,6 +755,9 @@ void Filesystem::setSymlinksEnabled(bool enable)
 
 bool Filesystem::areSymlinksEnabled() const
 {
+	if (!PHYSFS_isInit())
+		return false;
+
 	return PHYSFS_symbolicLinksPermitted() != 0;
 }