diff --git a/mem/mem_solaris.go b/mem/mem_solaris.go
index 0c27bd0..4d152f4 100644
--- a/mem/mem_solaris.go
+++ b/mem/mem_solaris.go
@@ -67,7 +67,7 @@ func zoneName() (string, error) {
 	return strings.TrimSpace(string(out)), nil
 }
 
-var globalZoneMemoryCapacityMatch = regexp.MustCompile(`memory size: ([\d]+) Megabytes`)
+var globalZoneMemoryCapacityMatch = regexp.MustCompile(`[Mm]emory size: ([\d]+) Megabytes`)
 
 func globalZoneMemoryCapacity() (uint64, error) {
 	prtconf, err := exec.LookPath("prtconf")
diff --git a/v3/mem/mem_solaris.go b/v3/mem/mem_solaris.go
index 91831d4..6dc849e 100644
--- a/v3/mem/mem_solaris.go
+++ b/v3/mem/mem_solaris.go
@@ -67,7 +67,7 @@ func zoneName() (string, error) {
 	return strings.TrimSpace(string(out)), nil
 }
 
-var globalZoneMemoryCapacityMatch = regexp.MustCompile(`memory size: ([\d]+) Megabytes`)
+var globalZoneMemoryCapacityMatch = regexp.MustCompile(`[Mm]emory size: ([\d]+) Megabytes`)
 
 func globalZoneMemoryCapacity() (uint64, error) {
 	prtconf, err := exec.LookPath("prtconf")