diff --git a/src/bin/debug/strace/area.cpp b/src/bin/debug/strace/area.cpp
index d57964d05c..63680f4f8a 100644
--- a/src/bin/debug/strace/area.cpp
+++ b/src/bin/debug/strace/area.cpp
@@ -28,7 +28,30 @@ static const FlagsTypeHandler::FlagInfo kAreaProtectionFlagInfos[] = {
 };
 
 
+struct enum_info {
+	unsigned int index;
+	const char *name;
+};
+
+#define ENUM_INFO_ENTRY(name) \
+	{ name, #name }
+
+static const enum_info kAddressSpecs[] = {
+	ENUM_INFO_ENTRY(B_ANY_ADDRESS),
+	ENUM_INFO_ENTRY(B_EXACT_ADDRESS),
+	ENUM_INFO_ENTRY(B_BASE_ADDRESS),
+	ENUM_INFO_ENTRY(B_CLONE_ADDRESS),
+	ENUM_INFO_ENTRY(B_ANY_KERNEL_ADDRESS),
+	ENUM_INFO_ENTRY(B_RANDOMIZED_ANY_ADDRESS),
+	ENUM_INFO_ENTRY(B_RANDOMIZED_BASE_ADDRESS),
+
+	{ 0, NULL }
+};
+
+
 static FlagsTypeHandler::FlagsList kAreaProtectionFlags;
+static EnumTypeHandler::EnumMap kAddressSpecsMap;
+
 
 void
 patch_area()
@@ -36,19 +59,33 @@ patch_area()
 	for (int i = 0; kAreaProtectionFlagInfos[i].name != NULL; i++) {
 		kAreaProtectionFlags.push_back(kAreaProtectionFlagInfos[i]);
 	}
+	for (int i = 0; kAddressSpecs[i].name != NULL; i++) {
+		kAddressSpecsMap[kAddressSpecs[i].index] = kAddressSpecs[i].name;
+	}
 
 	Syscall *create = get_syscall("_kern_create_area");
 	create->GetParameter("address")->SetInOut(true);
+	create->GetParameter("addressSpec")->SetHandler(
+		new EnumTypeHandler(kAddressSpecsMap));
 	create->GetParameter("protection")->SetHandler(
 		new FlagsTypeHandler(kAreaProtectionFlags));
 
+	Syscall *transfer = get_syscall("_kern_transfer_area");
+	transfer->GetParameter("_address")->SetInOut(true);
+	transfer->GetParameter("addressSpec")->SetHandler(
+		new EnumTypeHandler(kAddressSpecsMap));
+
 	Syscall *clone = get_syscall("_kern_clone_area");
 	clone->GetParameter("_address")->SetInOut(true);
+	clone->GetParameter("addressSpec")->SetHandler(
+		new EnumTypeHandler(kAddressSpecsMap));
 	clone->GetParameter("protection")->SetHandler(
 		new FlagsTypeHandler(kAreaProtectionFlags));
 
 	Syscall *reserve_address_range = get_syscall("_kern_reserve_address_range");
 	reserve_address_range->GetParameter("_address")->SetInOut(true);
+	reserve_address_range->GetParameter("addressSpec")->SetHandler(
+		new EnumTypeHandler(kAddressSpecsMap));
 
 	Syscall *set_area_protection = get_syscall("_kern_set_area_protection");
 	set_area_protection->GetParameter("newProtection")->SetHandler(
@@ -56,6 +93,8 @@ patch_area()
 
 	Syscall *map_file = get_syscall("_kern_map_file");
 	map_file->GetParameter("address")->SetInOut(true);
+	map_file->GetParameter("addressSpec")->SetHandler(
+		new EnumTypeHandler(kAddressSpecsMap));
 	map_file->GetParameter("protection")->SetHandler(
 		new FlagsTypeHandler(kAreaProtectionFlags));