diff --git a/fpga/common b/fpga/common
index 90e0c3df7..b33fe9679 160000
--- a/fpga/common
+++ b/fpga/common
@@ -1 +1 @@
-Subproject commit 90e0c3df70200f0eccbb3b145393f81e31e15ebb
+Subproject commit b33fe9679c1e1b6c79cd115bfd6b9bb224575068
diff --git a/fpga/include/villas/fpga/core.hpp b/fpga/include/villas/fpga/core.hpp
index 7efb1e789..6376baf64 100644
--- a/fpga/include/villas/fpga/core.hpp
+++ b/fpga/include/villas/fpga/core.hpp
@@ -14,12 +14,12 @@
 #include <list>
 #include <memory>
 #include <jansson.h>
-
+#include <fmt/ostream.h>
 #include <villas/log.hpp>
 #include <villas/colors.hpp>
+#include <villas/config.hpp>
 #include <villas/memory.hpp>
 #include <villas/plugin.hpp>
-
 #include <villas/fpga/vlnv.hpp>
 
 namespace villas {
@@ -280,7 +280,7 @@ protected:
 		IRQ,
 	};
 
-	Logger getLogger() const
+	Logger getLogger()
 	{
 		return villas::logging.get(getName());
 	}
@@ -345,3 +345,12 @@ private:
 } // namespace ip
 } // namespace fpga
 } // namespace villas
+
+#ifndef FMT_LEGACY_OSTREAM_FORMATTER
+template <>
+class fmt::formatter<villas::fpga::ip::IpIdentifier>
+    : public fmt::ostream_formatter {};
+template <>
+class fmt::formatter<villas::fpga::ip::Core>
+    : public fmt::ostream_formatter {};
+#endif
diff --git a/fpga/include/villas/fpga/ips/dma.hpp b/fpga/include/villas/fpga/ips/dma.hpp
index 333a9a372..8621b8f85 100644
--- a/fpga/include/villas/fpga/ips/dma.hpp
+++ b/fpga/include/villas/fpga/ips/dma.hpp
@@ -9,8 +9,9 @@
 
 #pragma once
 
+#include <fmt/ostream.h>
 #include <xilinx/xaxidma.h>
-
+#include <villas/config.hpp>
 #include <villas/memory.hpp>
 #include <villas/fpga/node.hpp>
 #include <villas/exceptions.hpp>
@@ -186,3 +187,9 @@ protected:
 } // namespace ip
 } // namespace fpga
 } // namespace villas
+
+#ifndef FMT_LEGACY_OSTREAM_FORMATTER
+template <>
+class fmt::formatter<villas::fpga::ip::Dma>
+    : public fmt::ostream_formatter {};
+#endif
diff --git a/fpga/include/villas/fpga/node.hpp b/fpga/include/villas/fpga/node.hpp
index 5b53cb24a..bd4632882 100644
--- a/fpga/include/villas/fpga/node.hpp
+++ b/fpga/include/villas/fpga/node.hpp
@@ -13,9 +13,9 @@
 #include <map>
 #include <string>
 #include <jansson.h>
-
+#include <fmt/ostream.h>
+#include <villas/config.hpp>
 #include <villas/fpga/core.hpp>
-
 #include <villas/graph/directed.hpp>
 
 namespace villas {
@@ -185,3 +185,12 @@ private:
 } // namespace ip
 } // namespace fpga
 } // namespace villas
+
+#ifndef FMT_LEGACY_OSTREAM_FORMATTER
+template <>
+class fmt::formatter<villas::fpga::ip::StreamVertex>
+    : public fmt::ostream_formatter {};
+template <>
+class fmt::formatter<villas::fpga::ip::Node>
+    : public fmt::ostream_formatter {};
+#endif
diff --git a/fpga/include/villas/fpga/vlnv.hpp b/fpga/include/villas/fpga/vlnv.hpp
index 65b812cd6..7b7be2b49 100644
--- a/fpga/include/villas/fpga/vlnv.hpp
+++ b/fpga/include/villas/fpga/vlnv.hpp
@@ -10,6 +10,8 @@
 #include <string>
 #include <sstream>
 #include <iostream>
+#include <fmt/ostream.h>
+#include <villas/config.hpp>
 
 namespace villas {
 namespace fpga {
@@ -70,3 +72,9 @@ private:
 
 } // namespace fpga
 } // namespace villas
+
+#ifndef FMT_LEGACY_OSTREAM_FORMATTER
+template <>
+class fmt::formatter<villas::fpga::Vlnv>
+    : public fmt::ostream_formatter {};
+#endif
diff --git a/fpga/lib/pcie_card.cpp b/fpga/lib/pcie_card.cpp
index 46fb7ac74..f68da1533 100644
--- a/fpga/lib/pcie_card.cpp
+++ b/fpga/lib/pcie_card.cpp
@@ -8,13 +8,11 @@
 #include <string>
 #include <memory>
 #include <utility>
-
+#include <fmt/ostream.h>
 #include <villas/exceptions.hpp>
 #include <villas/memory.hpp>
-
 #include <villas/kernel/pci.hpp>
 #include <villas/kernel/vfio_container.hpp>
-
 #include <villas/fpga/core.hpp>
 #include <villas/fpga/node.hpp>
 #include <villas/fpga/pcie_card.hpp>
@@ -96,7 +94,7 @@ std::list<std::shared_ptr<PCIeCard>> PCIeCardFactory::make(json_t *json,
 		}
 		if (!searchPath.empty()) {
 			std::filesystem::path json_ips_path = searchPath / json_string_value(json_ips);
-			logger->debug("searching for FPGA IP cors config at {}", json_ips_path);
+			logger->debug("searching for FPGA IP cors config at {}", json_ips_path.string());
 			json_ips = json_load_file(json_ips_path.c_str(), 0, nullptr);
 		}
 		if (json_ips == nullptr) {