diff --git a/include/icsneo/disk/neomemorydiskreaddriver.h b/include/icsneo/disk/neomemorydiskreaddriver.h
index 2694a8f..aa28838 100644
--- a/include/icsneo/disk/neomemorydiskreaddriver.h
+++ b/include/icsneo/disk/neomemorydiskreaddriver.h
@@ -27,7 +27,7 @@ public:
 
 private:
 	static constexpr const uint8_t MemoryTypeSD = 0x01; // Logical Disk
-	static constexpr const std::chrono::duration CacheTime = std::chrono::seconds(1);
+	static constexpr const std::chrono::seconds CacheTime = std::chrono::seconds(1);
 
 	std::array<uint8_t, SectorSize> cache;
 	uint64_t cachePos = 0;
diff --git a/include/icsneo/disk/plasiondiskreaddriver.h b/include/icsneo/disk/plasiondiskreaddriver.h
index 1bc0b7e..6a575e9 100644
--- a/include/icsneo/disk/plasiondiskreaddriver.h
+++ b/include/icsneo/disk/plasiondiskreaddriver.h
@@ -25,7 +25,7 @@ public:
 
 private:
 	static constexpr const uint32_t MaxSize = 65024;
-	static constexpr const std::chrono::duration CacheTime = std::chrono::seconds(1);
+	static constexpr const std::chrono::seconds CacheTime = std::chrono::seconds(1);
 
 	std::array<uint8_t, MaxSize> cache;
 	uint64_t cachePos = 0;