diff --git a/usr.sbin/bhyve/amd64/e820.c b/usr.sbin/bhyve/amd64/e820.c
--- a/usr.sbin/bhyve/amd64/e820.c
+++ b/usr.sbin/bhyve/amd64/e820.c
@@ -156,6 +156,7 @@
 {
 	struct e820_element *new_element;
 	struct e820_element *element;
+	struct e820_element *sib_element;
 	struct e820_element *ram_element;
 
 	assert(end >= base);
@@ -222,7 +223,16 @@
 		 * 	[ 0x1000, 0x2000] Reserved
 		 * 	[ 0x2000, 0x4000] RAM		<-- element
 		 */
-		TAILQ_INSERT_BEFORE(element, new_element, chain);
+		sib_element = TAILQ_PREV(element, e820_table, chain);
+		if (sib_element != NULL &&
+		    sib_element->type == new_element->type &&
+		    sib_element->end == new_element->base) {
+			/* Merge new element into previous one. */
+			sib_element->end = new_element->end;
+			free(new_element);
+		} else {
+			TAILQ_INSERT_BEFORE(element, new_element, chain);
+		}
 		element->base = end;
 	} else if (end == element->end) {
 		/*
@@ -236,7 +246,15 @@
 		 * 	[ 0x1000, 0x3000] RAM		<-- element
 		 * 	[ 0x3000, 0x4000] Reserved
 		 */
-		TAILQ_INSERT_AFTER(&e820_table, element, new_element, chain);
+		sib_element = TAILQ_NEXT(element, chain);
+		if (sib_element != NULL && sib_element->type == new_element->type &&
+		    sib_element->base == new_element->end) {
+			sib_element->base = new_element->base;
+			free(new_element);
+		} else {
+			TAILQ_INSERT_AFTER(&e820_table, element, new_element,
+			    chain);
+		}
 		element->end = base;
 	} else {
 		/*