diff --git a/renderdoc/os/posix/android/android_hook.cpp b/renderdoc/os/posix/android/android_hook.cpp
index c14811094..4eb284860 100644
--- a/renderdoc/os/posix/android/android_hook.cpp
+++ b/renderdoc/os/posix/android/android_hook.cpp
@@ -89,7 +89,7 @@ public:
   void AddLibHook(const rdcstr &name)
   {
     SCOPED_LOCK(lock);
-    if(libhooks.contains(name))
+    if(!libhooks.contains(name))
       libhooks.push_back(name);
   }
 
diff --git a/renderdoc/os/posix/linux/linux_hook.cpp b/renderdoc/os/posix/linux/linux_hook.cpp
index 7e1e3748b..6e94eeb3a 100644
--- a/renderdoc/os/posix/linux/linux_hook.cpp
+++ b/renderdoc/os/posix/linux/linux_hook.cpp
@@ -258,7 +258,7 @@ void LibraryHooks::RegisterLibraryHook(char const *name, FunctionLoadCallback cb
 {
   SCOPED_LOCK(libLock);
 
-  if(libraryHooks.contains(name))
+  if(!libraryHooks.contains(name))
     libraryHooks.push_back(name);
 
   if(cb)