diff --git a/sys/dev/acpica/acpi_spmc.c b/sys/dev/acpica/acpi_spmc.c
index d67ac2770f7..1ce4401ebcf 100644
--- a/sys/dev/acpica/acpi_spmc.c
+++ b/sys/dev/acpica/acpi_spmc.c
@@ -448,7 +448,7 @@ acpi_spmc_dsm_print_functions(const struct acpi_spmc_softc *const sc,
 	device_printf(sc->dev, "DSM %s: Supported functions: %#" PRIx64 "%s\n",
 	    dsm->name, supported_functions, buf);
 
-	if (missing != 0) {
+	if (VERBOSE() && missing != 0) {
 		print_bit_field(buf, sizeof(buf), missing, "FUNC",
 		    pbf_function_name, dsm);
 		device_printf(sc->dev, "DSM %s: Does not enumerate expected "
@@ -456,7 +456,7 @@ acpi_spmc_dsm_print_functions(const struct acpi_spmc_softc *const sc,
 		    dsm->name, missing, buf);
 	}
 
-	if (unknown != 0) {
+	if (VERBOSE() && unknown != 0) {
 		print_bit_field(buf, sizeof(buf), unknown, "FUNC",
 		    pbf_function_name, dsm);
 		device_printf(sc->dev, "DSM %s: Supports more functions than "
@@ -528,8 +528,13 @@ acpi_spmc_parse_constraints_intel(struct acpi_spmc_softc *sc, ACPI_OBJECT *objec
 		 */
 		revision = detail->Package.Elements[0].Integer.Value;
 		if (revision != 0) {
-			device_printf(sc->dev, "Intel: Unknown revision %d for "
-			    "constraint %zu's detail package\n", revision, i);
+			/* Only print this error message once if not verbose. */
+			if (VERBOSE() || sc->constraint_count ==
+			    object->Package.Count)
+				device_printf(sc->dev,
+				    "Intel: Unknown revision %d for "
+				    "constraint %zu's detail package\n",
+				    revision, i);
 			sc->constraint_count--;
 			continue;
 		}
@@ -661,9 +666,11 @@ acpi_spmc_get_constraints(struct acpi_spmc_softc *const sc)
 		status = acpi_GetHandleInScope(sc->handle,
 		    __DECONST(char *, constraint->name), &constraint->handle);
 		if (ACPI_FAILURE(status)) {
-			device_printf(sc->dev,
-			    "Constraints: Cannot get handle for %s, ignoring\n",
-			    constraint->name);
+			if (VERBOSE())
+				device_printf(sc->dev,
+				    "Constraints: Cannot get handle for %s, "
+				    "ignoring\n",
+				    constraint->name);
 			constraint->handle = NULL;
 		}
 	}