diff --git a/drivers/acpi/acpica/acapps.h b/drivers/acpi/acpica/acapps.h
index e9f0833e818d17c641a75adaa01c1f6fd4dcd4f3..e4cc48fbf4eef49bdcbac4a879e0739a0faac25f 100644
--- a/drivers/acpi/acpica/acapps.h
+++ b/drivers/acpi/acpica/acapps.h
@@ -88,7 +88,7 @@
 	acpi_os_printf (" %-18s%s\n", name, description);
 
 #define FILE_SUFFIX_DISASSEMBLY     "dsl"
-#define ACPI_TABLE_FILE_SUFFIX      ".dat"
+#define FILE_SUFFIX_BINARY_TABLE    ".dat"	/* Needs the dot */
 
 /*
  * getopt
diff --git a/tools/power/acpi/tools/acpidump/apfiles.c b/tools/power/acpi/tools/acpidump/apfiles.c
index a37f9702b2a90433978f4a6715919c4a9f8e11e6..a1c62de42a3bc479e04818df981885eb2e458a47 100644
--- a/tools/power/acpi/tools/acpidump/apfiles.c
+++ b/tools/power/acpi/tools/acpidump/apfiles.c
@@ -150,7 +150,7 @@ int ap_write_to_binary_file(struct acpi_table_header *table, u32 instance)
 		strcat(filename, instance_str);
 	}
 
-	strcat(filename, ACPI_TABLE_FILE_SUFFIX);
+	strcat(filename, FILE_SUFFIX_BINARY_TABLE);
 
 	if (gbl_verbose_mode) {
 		acpi_log_error