diff --git a/filament/src/ResourceAllocator.cpp b/filament/src/ResourceAllocator.cpp
index eeff5011a6..b8d1e6698e 100644
--- a/filament/src/ResourceAllocator.cpp
+++ b/filament/src/ResourceAllocator.cpp
@@ -109,7 +109,7 @@ size_t ResourceAllocator::TextureKey::getSize() const noexcept {
 }
 
 ResourceAllocator::ResourceAllocator(Engine::Config const& config, DriverApi& driverApi) noexcept
-        : mCacheCapacity(config.resourceAllocatorCacheSizeMB),
+        : mCacheCapacity(config.resourceAllocatorCacheSizeMB << 20),
           mCacheMaxAge(config.resourceAllocatorCacheMaxAge),
           mBackend(driverApi) {
 }