diff --git a/bin/makefile-emscripten.wasm-wasm b/bin/makefile-emscripten.wasm-wasm
index 2007eec..f092375 100644
--- a/bin/makefile-emscripten.wasm-wasm
+++ b/bin/makefile-emscripten.wasm-wasm
@@ -1,6 +1,6 @@
 # Options for Emscripten, WASM and SDL
 
-CC = emcc -sUSE_SDL=2 -sASYNCIFY -sALLOW_MEMORY_GROWTH $(CLANG_CFLAGS)
+CC = emcc $(CLANG_CFLAGS)
 
 XFILES = $(OBJECTDIR)sdl.o
 
@@ -11,9 +11,9 @@ OPTFLAGS =  -O2 -g3
 DFLAGS = $(XFLAGS) -DRELEASE=351
 
 LD = emcc
-LDFLAGS = -sUSE_SDL=2 --preload-file $(SYSOUT)@full.sysout
+LDFLAGS = -sUSE_SDL=2 -sASYNCIFY -sALLOW_MEMORY_GROWTH --preload-file $(SYSOUT)@full.sysout
 LDELDFLAGS =
 
 OBJECTDIR = ../$(RELEASENAME)/
 
-default	: ../$(OSARCHNAME)/lde ../$(OSARCHNAME)/ldesdl.js
+default	: ../$(OSARCHNAME)/ldesdl.js
diff --git a/emscripten.wasm/ldesdl.html b/src/lde.html
similarity index 100%
rename from emscripten.wasm/ldesdl.html
rename to src/lde.html
diff --git a/src/timer.c b/src/timer.c
index 2cb14c2..08a5874 100644
--- a/src/timer.c
+++ b/src/timer.c
@@ -73,11 +73,6 @@ extern int ether_fd;
 extern DspInterface currentdsp;
 #endif /* XWINDOW */
 
-#ifdef MAIKO_OS_EMSCRIPTEN
-/* We can't touch the system clock */
-#define settimeofday(tv, tz)
-#endif
-
 #define LISP_UNIX_TIME_DIFF 29969152
 #define LISP_ALTO_TIME_MASK 0x80000000
 #define UNIX_ALTO_TIME_DIFF 2177452800U
@@ -293,6 +288,8 @@ void subr_settime(LispPTR args[])
   dosday.year = uxtime.tm_year;
   dosday.dayofweek = uxtime.tm_wday;
   _dos_setdate(&dosday);
+#elif defined(MAIKO_OS_EMSCRIPTEN)
+  (void)args[0];
 #else
   struct timeval timev;
   timev.tv_sec = *((int *)NativeAligned4FromLAddr(args[0])) - UNIX_ALTO_TIME_DIFF;
diff --git a/src/unixfork.c b/src/unixfork.c
index 929e4d4..366495f 100644
--- a/src/unixfork.c
+++ b/src/unixfork.c
@@ -45,11 +45,6 @@
 int flushing = 0;
 #endif
 
-#ifdef MAIKO_OS_EMSCRIPTEN
-/* We don't have any shell */
-#define getusershell() NULL
-#endif
-
 /* Used to communicate between Unix subprocesses and LISP */
 
 static long StartTime;  /* Time, for creating pipe filenames */
diff --git a/src/xc.c b/src/xc.c
index 644e00d..907b16b 100644
--- a/src/xc.c
+++ b/src/xc.c
@@ -20,6 +20,9 @@
 /*									*/
 /************************************************************************/
 
+#ifdef MAIKO_OS_EMSCRIPTEN
+#include <emscripten.h>
+#endif
 #include <signal.h>
 #include <stdint.h>
 #include <stdio.h>
@@ -33,10 +36,6 @@
 #include <sys/time.h>
 #endif /* DOS */
 
-#ifdef __EMSCRIPTEN__
-#include <emscripten.h>         /* Defines emscripten_sleep */
-#endif /* __EMSCRIPTEN__ */
-
 #include "lispemul.h"
 #include "emlglob.h"
 #include "address.h"
@@ -187,9 +186,6 @@ static int pseudoTimerAsyncCountdown = MAIKO_TIMER_ASYNC_EMULATION_INSNS_COUNTDO
 
 void dispatch(void) {
   InstPtr pccache;
-#ifdef __EMSCRIPTEN__
-  int cycles = 0;
-#endif
 
 #if defined(OPDISP)
   static const void* optable[256] = {
@@ -268,9 +264,6 @@ op_ufn : {
 /* DISPATCH "LOOP" */
 
 nextopcode:
-#ifdef __EMSCRIPTEN__
-  if (++cycles % 1000000 == 0) emscripten_sleep(1);
-#endif
 #ifdef MYOPTRACE
   if ((struct fnhead *)NativeAligned4FromLAddr(0x2ed600) == FuncObj) {
     quick_stack_check();
@@ -296,6 +289,9 @@ nextopcode:
 	  Irq_Stk_End = 0;
 #if defined(MAIKO_EMULATE_ASYNC_INTERRUPTS)
 	  IO_Signalled = TRUE;
+#endif
+#ifdef MAIKO_OS_EMSCRIPTEN
+	  emscripten_sleep(1);
 #endif
 	  pseudoTimerAsyncCountdown = insnsCountdownForTimerAsyncEmulation;
   }