diff --git a/pkg/db/ialpm/alpm.go b/pkg/db/ialpm/alpm.go
index 2e01cfa2b..d89127055 100644
--- a/pkg/db/ialpm/alpm.go
+++ b/pkg/db/ialpm/alpm.go
@@ -38,7 +38,7 @@ func NewExecutor(pacmanConf *pacmanconf.Config, logger *text.Logger) (*AlpmExecu
 		conf:                    pacmanConf,
 		log:                     logger,
 		installedRemotePkgNames: nil,
-		installedRemotePkgMap:   map[string]alpm.IPackage{},
+		installedRemotePkgMap:   nil,
 		installedSyncPkgNames:   nil,
 	}
 
diff --git a/pkg/db/ialpm/high_level.go b/pkg/db/ialpm/high_level.go
index 56a53bd02..54aeee031 100644
--- a/pkg/db/ialpm/high_level.go
+++ b/pkg/db/ialpm/high_level.go
@@ -8,6 +8,9 @@ import (
 
 // GetPackageNamesBySource returns package names with and without correspondence in SyncDBS respectively.
 func (ae *AlpmExecutor) getPackageNamesBySource() {
+	if ae.installedRemotePkgMap == nil {
+		ae.installedRemotePkgMap = map[string]alpm.IPackage{}
+	}
 	for _, localpkg := range ae.LocalPackages() {
 		pkgName := localpkg.Name()
 		if ae.SyncPackage(pkgName) != nil {