diff --git a/rpcs3/Emu/Cell/Modules/sceNp.cpp b/rpcs3/Emu/Cell/Modules/sceNp.cpp
index 916aa44a40..ee365b54ae 100644
--- a/rpcs3/Emu/Cell/Modules/sceNp.cpp
+++ b/rpcs3/Emu/Cell/Modules/sceNp.cpp
@@ -6962,7 +6962,7 @@ error_code sceNpSignalingGetConnectionFromPeerAddress(u32 ctx_id, np_in_addr_t p
 	return CELL_OK;
 }
 
-error_code sceNpSignalingGetLocalNetInfo(u32 ctx_id, vm::ptr<SceNpSignalingNetInfo> info)
+error_code sceNpSignalingGetLocalNetInfo(u32 ctx_id, vm::ptr<SceNpSignalingNetInfoDeprecated> info)
 {
 	sceNp.warning("sceNpSignalingGetLocalNetInfo(ctx_id=%d, info=*0x%x)", ctx_id, info);
 
@@ -6973,7 +6973,8 @@ error_code sceNpSignalingGetLocalNetInfo(u32 ctx_id, vm::ptr<SceNpSignalingNetIn
 		return SCE_NP_SIGNALING_ERROR_NOT_INITIALIZED;
 	}
 
-	if (!info || info->size != sizeof(SceNpSignalingNetInfo))
+	// Library has backward support for a version of SceNpSignalingNetInfo without npport
+	if (!info || (info->size != sizeof(SceNpSignalingNetInfo) && info->size != sizeof(SceNpSignalingNetInfoDeprecated)))
 	{
 		return SCE_NP_SIGNALING_ERROR_INVALID_ARGUMENT;
 	}
@@ -6985,7 +6986,12 @@ error_code sceNpSignalingGetLocalNetInfo(u32 ctx_id, vm::ptr<SceNpSignalingNetIn
 	info->nat_status    = SCE_NP_SIGNALING_NETINFO_NAT_STATUS_TYPE2;
 	info->upnp_status   = nph.get_upnp_status();
 	info->npport_status = SCE_NP_SIGNALING_NETINFO_NPPORT_STATUS_OPEN;
-	info->npport        = SCE_NP_PORT;
+
+	if (info->size == sizeof(SceNpSignalingNetInfo))
+	{
+		auto new_info = vm::unsafe_ptr_cast<SceNpSignalingNetInfo>(info);
+		new_info->npport = SCE_NP_PORT;
+	}
 
 	return CELL_OK;
 }
diff --git a/rpcs3/Emu/Cell/Modules/sceNp.h b/rpcs3/Emu/Cell/Modules/sceNp.h
index bc2ab7c6e2..12ca388ba2 100644
--- a/rpcs3/Emu/Cell/Modules/sceNp.h
+++ b/rpcs3/Emu/Cell/Modules/sceNp.h
@@ -1584,6 +1584,16 @@ struct SceNpSignalingNetInfo
 	be_t<u16> npport;
 };
 
+struct SceNpSignalingNetInfoDeprecated
+{
+	be_t<u32> size;
+	be_t<u32> local_addr; // in_addr
+	be_t<u32> mapped_addr; // in_addr
+	be_t<s32> nat_status;
+	be_t<s32> upnp_status;
+	be_t<s32> npport_status;
+};
+
 struct SceNpCustomMenuAction
 {
 	be_t<u32> options;
diff --git a/rpcs3/Emu/NP/np_helpers.cpp b/rpcs3/Emu/NP/np_helpers.cpp
index 8fb9025c23..5167a30fb5 100644
--- a/rpcs3/Emu/NP/np_helpers.cpp
+++ b/rpcs3/Emu/NP/np_helpers.cpp
@@ -24,7 +24,7 @@ namespace np
 
 	std::string communication_id_to_string(const SceNpCommunicationId& communicationId)
 	{
-		const std::string com_id_data(communicationId.data, communicationId.data + 9);
+		std::string_view com_id_data(communicationId.data, communicationId.data + 9);
 		return fmt::format("%s_%02d", com_id_data, communicationId.num);
 	}