diff --git a/src/sfizz/FilterPool.cpp b/src/sfizz/FilterPool.cpp
index 4af9f7b6..e64b9bde 100644
--- a/src/sfizz/FilterPool.cpp
+++ b/src/sfizz/FilterPool.cpp
@@ -132,8 +132,8 @@ size_t sfz::FilterPool::setNumFilters(size_t numFilters)
 
     filters.resize(std::distance(filters.begin(), filterSentinel.base()));
     for (size_t i = filters.size(); i < numFilters; ++i) {
-        auto filter = filters.emplace_back(std::make_shared<FilterHolder>(midiState));
-        filter->setSampleRate(sampleRate);
+        filters.emplace_back(std::make_shared<FilterHolder>(midiState));
+        filters.back()->setSampleRate(sampleRate);
     }
 
     return filters.size();