diff --git a/examples/command.wasm/CMakeLists.txt b/examples/command.wasm/CMakeLists.txt
index 3117e166..7c2c4293 100644
--- a/examples/command.wasm/CMakeLists.txt
+++ b/examples/command.wasm/CMakeLists.txt
@@ -36,7 +36,7 @@ set_target_properties(${TARGET} PROPERTIES LINK_FLAGS " \
     -s INITIAL_MEMORY=1024MB \
     -s TOTAL_MEMORY=1024MB \
     -s FORCE_FILESYSTEM=1 \
-    -s EXPORTED_RUNTIME_METHODS=\"['print', 'printErr', 'ccall', 'cwrap']\" \
+    -s EXPORTED_RUNTIME_METHODS=\"['print', 'printErr', 'ccall', 'cwrap', 'HEAPU8']\" \
     ${EXTRA_FLAGS} \
     ")
 
diff --git a/examples/stream.wasm/CMakeLists.txt b/examples/stream.wasm/CMakeLists.txt
index 9774062e..47b0b6b3 100644
--- a/examples/stream.wasm/CMakeLists.txt
+++ b/examples/stream.wasm/CMakeLists.txt
@@ -35,7 +35,7 @@ set_target_properties(${TARGET} PROPERTIES LINK_FLAGS " \
     -s INITIAL_MEMORY=1024MB \
     -s TOTAL_MEMORY=1024MB \
     -s FORCE_FILESYSTEM=1 \
-    -s EXPORTED_RUNTIME_METHODS=\"['print', 'printErr', 'ccall', 'cwrap']\" \
+    -s EXPORTED_RUNTIME_METHODS=\"['print', 'printErr', 'ccall', 'cwrap', 'HEAPU8']\" \
     ${EXTRA_FLAGS} \
     ")