diff --git a/ext/wasm/GNUmakefile b/ext/wasm/GNUmakefile
index bf1a49111c..4296b6305e 100644
--- a/ext/wasm/GNUmakefile
+++ b/ext/wasm/GNUmakefile
@@ -429,7 +429,7 @@ define SQLITE.CALL.C-PP.FILTER
 $(2): $(1) $$(MAKEFILE_LIST) $$(bin.c-pp)
 	@mkdir -p $$(dir $$@)
 	$$(bin.c-pp) -f $(1) -o $$@ $(3) $(SQLITE.CALL.C-PP.FILTER.global)
-#CLEAN_FILES += $(2)
+CLEAN_FILES += $(2)
 endef
 # /end SQLITE.CALL.C-PP.FILTER
 ########################################################################
diff --git a/ext/wasm/tester1.c-pp.js b/ext/wasm/tester1.c-pp.js
index 824b6081da..aafe4d7f3f 100644
--- a/ext/wasm/tester1.c-pp.js
+++ b/ext/wasm/tester1.c-pp.js
@@ -1356,6 +1356,7 @@ globalThis.sqlite3InitModule = sqlite3InitModule;
                              /columnCount property is read-only/)
           .assert(1===st.columnCount)
           .assert(0===st.parameterCount)
+          .assert(0===capi.sqlite3_bind_parameter_count(st))
           .mustThrow(()=>st.bind(1,null))
           .assert(true===st.step())
           .assert(3 === st.get(0))
@@ -1578,6 +1579,8 @@ globalThis.sqlite3InitModule = sqlite3InitModule;
       let st = db.prepare("update t set b=:b where a='blob'");
       try {
         T.assert(0===st.columnCount)
+          .assert(1===st.parameterCount)
+          .assert(1===capi.sqlite3_bind_parameter_count(st))
           .assert( false===st.isReadOnly() );
         const ndx = st.getParamIndex(':b');
         T.assert(1===ndx);
@@ -3417,6 +3420,7 @@ globalThis.sqlite3InitModule = sqlite3InitModule;
       db.exec("create table t(a)");
       const stmt = db.prepare("insert into t(a) values($a)");
       T.assert( 1===capi.sqlite3_bind_parameter_count(stmt) )
+        .assert( 1===stmt.parameterCount )
         .assert( 1===capi.sqlite3_bind_parameter_index(stmt, "$a") )
         .assert( 0===capi.sqlite3_bind_parameter_index(stmt, ":a") )
         .assert( 1===stmt.getParamIndex("$a") )
diff --git a/manifest b/manifest
index 7a3bb87723..da6bf18ef5 100644
--- a/manifest
+++ b/manifest
@@ -1,5 +1,5 @@
-C Remove\ssome\sdead\sJS\scode\sand\ssome\sextraneous\sdebug\soutput\sfrom\stest\scode.
-D 2025-07-06T15:36:28.567
+C wasm:\sadd\sa\sfew\stests\sdemonstrating\sthat\soo1.Stmt.paramaterCount's\snew\simpl\sdoes\snot\schange\svisible\sbehaviors.\sAdd\sthe\sc-pp-filtered\sfiles\sto\s'make\sclean'.
+D 2025-07-09T13:13:01.736
 F .fossil-settings/binary-glob 61195414528fb3ea9693577e1980230d78a1f8b0a54c78cf1b9b24d0a409ed6a x
 F .fossil-settings/empty-dirs dbb81e8fc0401ac46a1491ab34a7f2c7c0452f2f06b54ebb845d024ca8283ef1
 F .fossil-settings/ignore-glob 35175cdfcf539b2318cb04a9901442804be81cd677d8b889fcc9149c21f239ea
@@ -621,7 +621,7 @@ F ext/session/sqlite3session.c 6b0877fe1ab832aa4b85eaca72606dfd1630a1363a1be7af1
 F ext/session/sqlite3session.h 9bb1a6687b467764b35178dc29bbd2c57ab8cd3acdc8a62f088c34ad17e4fe2b
 F ext/session/test_session.c 2ddff73ea368d827028c32851b291416e1008845832feb27b751d15e57e13cc3
 F ext/wasm/EXPORTED_FUNCTIONS.fiddle.in 27450c8b8c70875a260aca55435ec927068b34cef801a96205adb81bdcefc65c
-F ext/wasm/GNUmakefile a05bb1766f97c88cb42fbfe9e349c799c691f8ae0dc959e9d9469f0bcee89350
+F ext/wasm/GNUmakefile 4d329d89ffb701847abadff9a7e8ec59aaa26a6a2b8ddc2677514154248a2871
 F ext/wasm/README-dist.txt f01081a850ce38a56706af6b481e3a7878e24e42b314cfcd4b129f0f8427066a
 F ext/wasm/README.md b89605f65661cf35bf034ff6d43e448cc169b8017fc105d498e33b81218b482c
 F ext/wasm/SQLTester/GNUmakefile e0794f676d55819951bbfae45cc5e8d7818dc460492dc317ce7f0d2eca15caff
@@ -698,7 +698,7 @@ F ext/wasm/test-opfs-vfs.html 1f2d672f3f3fce810dfd48a8d56914aba22e45c6834e262555
 F ext/wasm/test-opfs-vfs.js 1618670e466f424aa289859fe0ec8ded223e42e9e69b5c851f809baaaca1a00c
 F ext/wasm/tester1-worker.html ebc4b820a128963afce328ecf63ab200bd923309eb939f4110510ab449e9814c
 F ext/wasm/tester1.c-pp.html 1c1bc78b858af2019e663b1a31e76657b73dc24bede28ca92fbe917c3a972af2
-F ext/wasm/tester1.c-pp.js b99d18fe8803215664a3b53af451d11e2573682a2c8973bcd28ce574c497393b
+F ext/wasm/tester1.c-pp.js 1c4fdb32e10c92e2595939b1b6f6588cd3a30a2691ba2dc4a42893db99e0648b
 F ext/wasm/tests/opfs/concurrency/index.html 657578a6e9ce1e9b8be951549ed93a6a471f4520a99e5b545928668f4285fb5e
 F ext/wasm/tests/opfs/concurrency/test.js d08889a5bb6e61937d0b8cbb78c9efbefbf65ad09f510589c779b7cc6a803a88
 F ext/wasm/tests/opfs/concurrency/worker.js 0a8c1a3e6ebb38aabbee24f122693f1fb29d599948915c76906681bb7da1d3d2
@@ -2208,8 +2208,8 @@ F tool/version-info.c 3b36468a90faf1bbd59c65fd0eb66522d9f941eedd364fabccd7227350
 F tool/warnings-clang.sh bbf6a1e685e534c92ec2bfba5b1745f34fb6f0bc2a362850723a9ee87c1b31a7
 F tool/warnings.sh 1ad0169b022b280bcaaf94a7fa231591be96b514230ab5c98fbf15cd7df842dd
 F tool/win/sqlite.vsix deb315d026cc8400325c5863eef847784a219a2f
-P 7933505f0c1d25c6ee81ead8edc5ea649a84ec0582321bcf5ed4a17232750f90
-R 7f815f9b4c7a2aabd4a38289c5be858a
+P 6e73770a7f3845055e0130012d844c32c4a1bfdb87e8379c161e1a266a808143
+R 275bf35e86e01e823d3a78eac9fe64ed
 U stephan
-Z d14be01d18ce30e04a958bfca48cc223
+Z 5ade71be55c22a5952ee210feb5c3747
 # Remove this line to create a well-formed Fossil manifest.
diff --git a/manifest.uuid b/manifest.uuid
index eee638be6b..dbc806e8f1 100644
--- a/manifest.uuid
+++ b/manifest.uuid
@@ -1 +1 @@
-6e73770a7f3845055e0130012d844c32c4a1bfdb87e8379c161e1a266a808143
+3fe61545967f82190011edb90b1be6a448b590555c7ba5f8e96494aeea8f88ce