diff --git a/src/system/boot/platform/bios_ia32/multiboot.cpp b/src/system/boot/platform/bios_ia32/multiboot.cpp
index 31a1f2cca5..b9cc54eee9 100644
--- a/src/system/boot/platform/bios_ia32/multiboot.cpp
+++ b/src/system/boot/platform/bios_ia32/multiboot.cpp
@@ -56,6 +56,7 @@ parse_multiboot_commandline(stage2_args *args)
 
 	sArgs[0] = cmdline;
 	args->arguments = sArgs;
+	args->arguments_count = 1;
 
 	return B_OK;
 }
diff --git a/src/system/boot/platform/cfe/start.cpp b/src/system/boot/platform/cfe/start.cpp
index b9a8dafb82..feb79b38b1 100644
--- a/src/system/boot/platform/cfe/start.cpp
+++ b/src/system/boot/platform/cfe/start.cpp
@@ -131,6 +131,7 @@ start(uint64 cfeHandle, uint64 cfeEntry)
 		static const char *sArgs[] = { NULL, NULL };
 		sArgs[0] = (const char *)bootargs;
 		args.arguments = sArgs;
+		args.arguments_count = 1;
 	}
 #endif
 
diff --git a/src/system/boot/platform/openfirmware/start.cpp b/src/system/boot/platform/openfirmware/start.cpp
index 0d983e8292..de6dce172f 100644
--- a/src/system/boot/platform/openfirmware/start.cpp
+++ b/src/system/boot/platform/openfirmware/start.cpp
@@ -162,6 +162,7 @@ start(void *openFirmwareEntry)
 		static const char *sArgs[] = { NULL, NULL };
 		sArgs[0] = (const char *)bootargs;
 		args.arguments = sArgs;
+		args.arguments_count = 1;
 	}
 
 	determine_machine();