diff --git a/internal/monitoring/monitor.go b/internal/monitoring/monitor.go
index 22accaa..0b1dee1 100644
--- a/internal/monitoring/monitor.go
+++ b/internal/monitoring/monitor.go
@@ -7264,7 +7264,7 @@ func buildGuestLookups(snapshot models.StateSnapshot, metadataStore *config.Gues
 		key := alerts.BuildGuestKey(vm.Instance, vm.Node, vm.VMID)
 		byKey[key] = info
 
-		vmidKey := fmt.Sprintf("%d", vm.VMID)
+		vmidKey := strconv.Itoa(vm.VMID)
 		byVMID[vmidKey] = append(byVMID[vmidKey], info)
 
 		// Persist last-known name and type for this guest
@@ -7286,7 +7286,7 @@ func buildGuestLookups(snapshot models.StateSnapshot, metadataStore *config.Gues
 			byKey[key] = info
 		}
 
-		vmidKey := fmt.Sprintf("%d", ct.VMID)
+		vmidKey := strconv.Itoa(ct.VMID)
 		byVMID[vmidKey] = append(byVMID[vmidKey], info)
 
 		// Persist last-known name and type for this guest
@@ -7320,7 +7320,7 @@ func enrichWithPersistedMetadata(metadataStore *config.GuestMetadataStore, byVMI
 			continue // Invalid key format
 		}
 
-		vmidKey := fmt.Sprintf("%d", vmid)
+		vmidKey := strconv.Itoa(vmid)
 
 		// Check if we already have a live entry for this exact guest
 		hasLiveEntry := false
diff --git a/internal/monitoring/temperature.go b/internal/monitoring/temperature.go
index 7a2242a..e93da6b 100644
--- a/internal/monitoring/temperature.go
+++ b/internal/monitoring/temperature.go
@@ -259,7 +259,7 @@ func (tc *TemperatureCollector) runSSHCommand(ctx context.Context, host, command
 		"-o", "BatchMode=yes",
 		"-o", "LogLevel=ERROR", // Suppress host key warnings that break JSON parsing
 		"-o", "ConnectTimeout=5",
-		"-p", fmt.Sprintf("%d", tc.sshPort), // Use configured SSH port
+		"-p", strconv.Itoa(tc.sshPort), // Use configured SSH port
 	}
 
 	if tc.hostKeys != nil && tc.hostKeys.Path() != "" {