diff --git a/cmd/geth/main.go b/cmd/geth/main.go
index 8eb8914a90..c808491e29 100644
--- a/cmd/geth/main.go
+++ b/cmd/geth/main.go
@@ -311,18 +311,16 @@ func prepare(ctx *cli.Context) {
 		ctx.GlobalSet(utils.CacheFlag.Name, strconv.Itoa(128))
 	}
 	// Cap the cache allowance and tune the garbage collector
-	if runtime.GOOS != "openbsd" {
-		mem, err := gopsutil.VirtualMemory()
-		if err == nil {
-			if 32<<(^uintptr(0)>>63) == 32 && mem.Total > 2*1024*1024*1024 {
-				log.Warn("Lowering memory allowance on 32bit arch", "available", mem.Total/1024/1024, "addressable", 2*1024)
-				mem.Total = 2 * 1024 * 1024 * 1024
-			}
-			allowance := int(mem.Total / 1024 / 1024 / 3)
-			if cache := ctx.GlobalInt(utils.CacheFlag.Name); cache > allowance {
-				log.Warn("Sanitizing cache to Go's GC limits", "provided", cache, "updated", allowance)
-				ctx.GlobalSet(utils.CacheFlag.Name, strconv.Itoa(allowance))
-			}
+	mem, err := gopsutil.VirtualMemory()
+	if err == nil {
+		if 32<<(^uintptr(0)>>63) == 32 && mem.Total > 2*1024*1024*1024 {
+			log.Warn("Lowering memory allowance on 32bit arch", "available", mem.Total/1024/1024, "addressable", 2*1024)
+			mem.Total = 2 * 1024 * 1024 * 1024
+		}
+		allowance := int(mem.Total / 1024 / 1024 / 3)
+		if cache := ctx.GlobalInt(utils.CacheFlag.Name); cache > allowance {
+			log.Warn("Sanitizing cache to Go's GC limits", "provided", cache, "updated", allowance)
+			ctx.GlobalSet(utils.CacheFlag.Name, strconv.Itoa(allowance))
 		}
 	}
 	// Ensure Go's GC ignores the database cache for trigger percentage