diff --git a/compileopts/config.go b/compileopts/config.go
index 0bb839ff..821aa831 100644
--- a/compileopts/config.go
+++ b/compileopts/config.go
@@ -89,7 +89,7 @@ func (c *Config) NeedsStackObjects() bool {
 	switch c.GC() {
 	case "conservative", "extalloc":
 		for _, tag := range c.BuildTags() {
-			if tag == "wasm" {
+			if tag == "tinygo.wasm" {
 				return true
 			}
 		}
diff --git a/src/runtime/arch_arm.go b/src/runtime/arch_arm.go
index e2dc4b5b..19caa619 100644
--- a/src/runtime/arch_arm.go
+++ b/src/runtime/arch_arm.go
@@ -1,4 +1,4 @@
-// +build arm,!baremetal,!wasm arm,arm7tdmi
+// +build arm,!baremetal,!tinygo.wasm arm,arm7tdmi
 
 package runtime
 
diff --git a/src/runtime/arch_wasm.go b/src/runtime/arch_tinygowasm.go
similarity index 98%
rename from src/runtime/arch_wasm.go
rename to src/runtime/arch_tinygowasm.go
index 00dd0deb..0ee3afd3 100644
--- a/src/runtime/arch_wasm.go
+++ b/src/runtime/arch_tinygowasm.go
@@ -1,4 +1,4 @@
-// +build wasm
+// +build tinygo.wasm
 
 package runtime
 
diff --git a/src/runtime/gc_globals_conservative.go b/src/runtime/gc_globals_conservative.go
index bee55a88..56476551 100644
--- a/src/runtime/gc_globals_conservative.go
+++ b/src/runtime/gc_globals_conservative.go
@@ -1,5 +1,5 @@
 // +build gc.conservative gc.extalloc
-// +build baremetal wasm
+// +build baremetal tinygo.wasm
 
 package runtime
 
diff --git a/src/runtime/gc_globals_precise.go b/src/runtime/gc_globals_precise.go
index 2d6c8c14..f79b71fd 100644
--- a/src/runtime/gc_globals_precise.go
+++ b/src/runtime/gc_globals_precise.go
@@ -1,5 +1,5 @@
 // +build gc.conservative gc.extalloc
-// +build !baremetal,!wasm
+// +build !baremetal,!tinygo.wasm
 
 package runtime
 
diff --git a/src/runtime/gc_stack_portable.go b/src/runtime/gc_stack_portable.go
index d48b2497..d4a04637 100644
--- a/src/runtime/gc_stack_portable.go
+++ b/src/runtime/gc_stack_portable.go
@@ -1,5 +1,5 @@
 // +build gc.conservative gc.extalloc
-// +build wasm
+// +build tinygo.wasm
 
 package runtime
 
diff --git a/src/runtime/gc_stack_raw.go b/src/runtime/gc_stack_raw.go
index 74be7fe8..01b07d9b 100644
--- a/src/runtime/gc_stack_raw.go
+++ b/src/runtime/gc_stack_raw.go
@@ -1,5 +1,5 @@
 // +build gc.conservative gc.extalloc
-// +build !wasm
+// +build !tinygo.wasm
 
 package runtime
 
diff --git a/src/runtime/runtime_wasm.go b/src/runtime/runtime_tinygowasm.go
similarity index 98%
rename from src/runtime/runtime_wasm.go
rename to src/runtime/runtime_tinygowasm.go
index 1146f578..989fbb80 100644
--- a/src/runtime/runtime_wasm.go
+++ b/src/runtime/runtime_tinygowasm.go
@@ -1,4 +1,4 @@
-// +build wasm
+// +build tinygo.wasm
 
 package runtime
 
diff --git a/src/runtime/runtime_wasm_wasi.go b/src/runtime/runtime_wasm_wasi.go
index 76d0a452..4f0432f7 100644
--- a/src/runtime/runtime_wasm_wasi.go
+++ b/src/runtime/runtime_wasm_wasi.go
@@ -1,4 +1,4 @@
-// +build wasm,wasi
+// +build tinygo.wasm,wasi
 
 package runtime
 
diff --git a/targets/wasi.json b/targets/wasi.json
index c24ed8f1..b80b77d1 100644
--- a/targets/wasi.json
+++ b/targets/wasi.json
@@ -1,6 +1,6 @@
 {
 	"llvm-target":   "wasm32--wasi",
-	"build-tags":    ["wasm", "wasi"],
+	"build-tags":    ["tinygo.wasm", "wasi"],
 	"goos":          "linux",
 	"goarch":        "arm",
 	"linker":        "wasm-ld",
diff --git a/targets/wasm.json b/targets/wasm.json
index 6208eb27..eb03eb8c 100644
--- a/targets/wasm.json
+++ b/targets/wasm.json
@@ -1,6 +1,6 @@
 {
 	"llvm-target":   "wasm32--wasi",
-	"build-tags":    ["js", "wasm"],
+	"build-tags":    ["tinygo.wasm"],
 	"goos":          "js",
 	"goarch":        "wasm",
 	"linker":        "wasm-ld",