diff --git a/subsys/logging/Kconfig b/subsys/logging/Kconfig
index 9d253b7a044..530b9cb9ddf 100644
--- a/subsys/logging/Kconfig
+++ b/subsys/logging/Kconfig
@@ -165,6 +165,7 @@ config LOG_PROCESS_THREAD_STACK_SIZE
 	default 2048 if COVERAGE_GCOV
 	default 1024 if NO_OPTIMIZATIONS
 	default 1024 if XTENSA
+	default 4096 if (X86 && X86_LONGMODE)
 	default 768
 	help
 	  Set the internal stack size for log processing thread.