diff --git a/renderdoc/os/posix/android/android_hook.cpp b/renderdoc/os/posix/android/android_hook.cpp
index d5de0106e..a8754efec 100644
--- a/renderdoc/os/posix/android/android_hook.cpp
+++ b/renderdoc/os/posix/android/android_hook.cpp
@@ -214,7 +214,7 @@ HookingInfo &GetHookInfo()
 
 void *intercept_dlopen(const char *filename, int flag)
 {
-  if(GetHookInfo().IsLibHook(filename))
+  if(filename && GetHookInfo().IsLibHook(std::string(filename)))
     return dlopen(RENDERDOC_ANDROID_LIBRARY, flag);
 
   return NULL;
@@ -420,7 +420,7 @@ uint64_t suppressTLS = 0;
 
 void process_dlopen(const char *filename, int flag)
 {
-  if(!GetHookInfo().IsHooked(filename))
+  if(filename && !GetHookInfo().IsHooked(std::string(filename)))
   {
     HOOK_DEBUG_PRINT("iterating after %s", filename);
     dl_iterate_phdr(dl_iterate_callback, NULL);
diff --git a/renderdoc/os/posix/linux/linux_hook.cpp b/renderdoc/os/posix/linux/linux_hook.cpp
index 71571101e..f7345c09f 100644
--- a/renderdoc/os/posix/linux/linux_hook.cpp
+++ b/renderdoc/os/posix/linux/linux_hook.cpp
@@ -85,6 +85,9 @@ void plthook_lib(void *handle)
 
 void *intercept_dlopen(const char *filename, int flag, void *ret)
 {
+  if(filename == NULL)
+    return ret;
+
   if(flag & RTLD_DEEPBIND)
     plthook_lib(ret);