diff --git a/dlls/msvcrt/file.c b/dlls/msvcrt/file.c
index b1fc6ca80f4..8ccc0ca37d5 100644
--- a/dlls/msvcrt/file.c
+++ b/dlls/msvcrt/file.c
@@ -2398,7 +2398,7 @@ void MSVCRT_setbuf(MSVCRT_FILE* file, char *buf)
 char *MSVCRT_tmpnam(char *s)
 {
   char tmpbuf[MAX_PATH];
-  char* prefix = "TMP";
+  const char* prefix = "TMP";
   if (!GetTempPathA(MAX_PATH,tmpbuf) ||
       !GetTempFileNameA(tmpbuf,prefix,0,MSVCRT_tmpname))
   {
diff --git a/dlls/msvcrt/tests/cpp.c b/dlls/msvcrt/tests/cpp.c
index 4b4806da18a..808e34de37a 100644
--- a/dlls/msvcrt/tests/cpp.c
+++ b/dlls/msvcrt/tests/cpp.c
@@ -335,12 +335,13 @@ static void test_exception(void)
   if (pe)
   {
     /* vector dtor, multiple elements */
+    char name[] = "a constant";
     *((int*)pe) = 3;
     pe = (exception*)((int*)pe + 1);
     call_func2(pexception_ctor, &pe[0], &e_name);
     call_func2(pexception_ctor, &pe[1], &e_name);
     call_func2(pexception_ctor, &pe[2], &e_name);
-    pe[3].name = "a constant";
+    pe[3].name = name;
     pe[3].do_free = 1; /* Crash if we try to free this */
     call_func2(pexception_vector_dtor, pe, 3); /* Should delete all 3 and then pe block */
   }
diff --git a/include/wine/port.h b/include/wine/port.h
index 44d46380d88..9aae76d98b0 100644
--- a/include/wine/port.h
+++ b/include/wine/port.h
@@ -280,7 +280,7 @@ extern int mkstemps(char *template, int suffix_len);
 # define _P_DETACH  4
 #endif
 #ifndef HAVE_SPAWNVP
-extern int spawnvp(int mode, const char *cmdname, char *const argv[]);
+extern int spawnvp(int mode, const char *cmdname, const char * const argv[]);
 #endif
 
 /* Interlocked functions */
diff --git a/libs/port/spawn.c b/libs/port/spawn.c
index ed44a1e9c18..675b22e1164 100644
--- a/libs/port/spawn.c
+++ b/libs/port/spawn.c
@@ -32,7 +32,7 @@
 #endif
 
 #ifndef HAVE_SPAWNVP
-int spawnvp(int mode, const char *cmdname, char *const argv[])
+int spawnvp(int mode, const char *cmdname, const char *const argv[])
 {
 #ifndef HAVE__SPAWNVP
     int pid = 0, status, wret;
@@ -40,7 +40,7 @@ int spawnvp(int mode, const char *cmdname, char *const argv[])
 
     if (mode == _P_OVERLAY)
     {
-        execvp(cmdname, argv);
+        execvp(cmdname, (char **)argv);
         return -1;  /* if we get here it failed */
     }
 
@@ -54,7 +54,7 @@ int spawnvp(int mode, const char *cmdname, char *const argv[])
     if (pid == 0)
     {
         sigaction( SIGPIPE, &dfl_act, NULL );
-        execvp(cmdname, argv);
+        execvp(cmdname, (char **)argv);
         _exit(1);
     }
 
diff --git a/programs/winemenubuilder/winemenubuilder.c b/programs/winemenubuilder/winemenubuilder.c
index 2dc3dce3882..1e822419152 100644
--- a/programs/winemenubuilder/winemenubuilder.c
+++ b/programs/winemenubuilder/winemenubuilder.c
@@ -578,7 +578,7 @@ static int fork_and_wait( char *linker, char *link_name, char *path,
                           char *workdir, char *description )
 {
     int pos = 0;
-    char *argv[20];
+    const char *argv[20];
 
     WINE_TRACE( "linker app='%s' link='%s' mode=%s "
         "path='%s' args='%s' icon='%s' workdir='%s' descr='%s'\n",
diff --git a/tools/winegcc/utils.c b/tools/winegcc/utils.c
index bd7d7a510a4..3805a4adcba 100644
--- a/tools/winegcc/utils.c
+++ b/tools/winegcc/utils.c
@@ -99,7 +99,7 @@ void strarray_free(strarray* arr)
     free(arr);
 }
 
-void strarray_add(strarray* arr, char* str)
+void strarray_add(strarray* arr, const char* str)
 {
     if (arr->size == arr->maximum)
     {
@@ -109,10 +109,10 @@ void strarray_add(strarray* arr, char* str)
     arr->base[arr->size++] = str;
 }
 
-void spawn(strarray* arr)
+void spawn(const strarray* arr)
 {
     int i, status;
-    char **argv = arr->base;
+    const char **argv = arr->base;
 
     if (verbose)
     {
diff --git a/tools/winegcc/utils.h b/tools/winegcc/utils.h
index c01c57fa2e2..053798fb760 100644
--- a/tools/winegcc/utils.h
+++ b/tools/winegcc/utils.h
@@ -30,13 +30,13 @@ char *strmake(const char *fmt, ...);
 typedef struct {
     size_t maximum;
     size_t size;
-    char** base;
+    const char** base;
 } strarray;
 
 strarray *strarray_alloc(void);
 void strarray_free(strarray* arr);
-void strarray_add(strarray* arr, char* str);
+void strarray_add(strarray* arr, const char* str);
 
-void spawn(strarray* arr);
+void spawn(const strarray* arr);
 
 extern int verbose;
diff --git a/tools/winegcc/winewrap.c b/tools/winegcc/winewrap.c
index 6a9f9b639be..aac54c62c40 100644
--- a/tools/winegcc/winewrap.c
+++ b/tools/winegcc/winewrap.c
@@ -215,7 +215,7 @@ static const char *wrapper_code =
     "}\n"
 ;
 
-static char *output_name = "a.out";
+static const char *output_name = "a.out";
 static strarray *arh_files, *dll_files, *lib_files, *llib_paths, *lib_paths, *obj_files;
 static int keep_generated = 0;
 
@@ -345,7 +345,8 @@ static void add_lib_file(const char* library)
 static void create_the_wrapper(char* base_file, char* base_name, char* app_name, int gui_mode)
 {
     char *wrp_temp_name, *wspec_name, *wspec_c_name, *wspec_o_name;
-    char *wrap_c_name, *wrap_o_name, *dlls = "";
+    char *wrap_c_name, *wrap_o_name;
+    const char *dlls = "";
     strarray *wwrap_args, *wspec_args, *wcomp_args, *wlink_args;
     int i;