diff --git a/Misc/NEWS b/Misc/NEWS
index a9adda9..5b5a125 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -15,6 +15,8 @@
 Core and Builtins
 -----------------
 
+- Issue #4146: Compilation on OpenBSD has been restored.
+
 - Issue #3574: compile() incorrectly handled source code encoded as Latin-1.
 
 - Issues #2384 and #3975: Tracebacks were not correctly printed when the
diff --git a/Modules/python.c b/Modules/python.c
index bf1ba9a..9e78889 100644
--- a/Modules/python.c
+++ b/Modules/python.c
@@ -17,9 +17,9 @@
 int
 main(int argc, char **argv)
 {
-	wchar_t **argv_copy = PyMem_Malloc(sizeof(wchar_t*)*argc);
+	wchar_t **argv_copy = (wchar_t **)PyMem_Malloc(sizeof(wchar_t*)*argc);
 	/* We need a second copies, as Python might modify the first one. */
-	wchar_t **argv_copy2 = PyMem_Malloc(sizeof(wchar_t*)*argc);
+	wchar_t **argv_copy2 = (wchar_t **)PyMem_Malloc(sizeof(wchar_t*)*argc);
 	int i, res;
 	char *oldloc;
 	/* 754 requires that FP exceptions run in "no stop" mode by default,
@@ -54,7 +54,7 @@
 			fprintf(stderr, "Could not convert argument %d to string\n", i);
 			return 1;
 		}
-		argv_copy[i] = PyMem_Malloc((argsize+1)*sizeof(wchar_t));
+		argv_copy[i] = (wchar_t *)PyMem_Malloc((argsize+1)*sizeof(wchar_t));
 		argv_copy2[i] = argv_copy[i];
 		if (!argv_copy[i]) {
 			fprintf(stderr, "out of memory\n");