diff --git a/include/spdlog/details/circular_q.h b/include/spdlog/details/circular_q.h
index 325dbfea..1f2712e7 100644
--- a/include/spdlog/details/circular_q.h
+++ b/include/spdlog/details/circular_q.h
@@ -5,6 +5,7 @@
 #pragma once
 
 #include <vector>
+#include <cassert>
 
 namespace spdlog {
 namespace details {
diff --git a/include/spdlog/details/pattern_formatter-inl.h b/include/spdlog/details/pattern_formatter-inl.h
index cc2f7eaa..6fdc78a9 100644
--- a/include/spdlog/details/pattern_formatter-inl.h
+++ b/include/spdlog/details/pattern_formatter-inl.h
@@ -75,8 +75,6 @@ public:
 private:
     void pad_it(long count)
     {
-        // count = std::min(count, spaces_.size());
-        // assert(count <= spaces_.size());
         fmt_helper::append_string_view(string_view_t(spaces_.data(), static_cast<size_t>(count)), dest_);
     }
 
diff --git a/include/spdlog/details/thread_pool-inl.h b/include/spdlog/details/thread_pool-inl.h
index 29a6363f..43220f43 100644
--- a/include/spdlog/details/thread_pool-inl.h
+++ b/include/spdlog/details/thread_pool-inl.h
@@ -8,6 +8,7 @@
 #endif
 
 #include <spdlog/common.h>
+#include <cassert>
 
 namespace spdlog {
 namespace details {