diff --git a/src/uxn-fast.c b/src/uxn-fast.c
index b35b8d4..43c4300 100644
--- a/src/uxn-fast.c
+++ b/src/uxn-fast.c
@@ -41,7 +41,7 @@ static const char *errors[] = {"underflow", "overflow", "division by zero"};
 int
 haltuxn(Uxn *u, Uint8 error, char *name, int id)
 {
-	printf("Halted: %s %s#%04x, at 0x%04x\n", name, errors[error - 1], id, u->ram.ptr);
+	fprintf(stderr,"Halted: %s %s#%04x, at 0x%04x\n", name, errors[error - 1], id, u->ram.ptr);
 	u->ram.ptr = 0;
 	return 0;
 }
@@ -4052,11 +4052,11 @@ loaduxn(Uxn *u, char *filepath)
 {
 	FILE *f;
 	if(!(f = fopen(filepath, "rb"))) {
-		printf("Halted: Missing input rom.\n");
+		fprintf(stderr, "Halted: Missing input rom.\n");
 		return 0;
 	}
 	fread(u->ram.dat + PAGE_PROGRAM, sizeof(u->ram.dat) - PAGE_PROGRAM, 1, f);
-	printf("Uxn loaded[%s].\n", filepath);
+	fprintf(stderr, "Uxn loaded[%s].\n", filepath);
 	return 1;
 }
 
@@ -4068,6 +4068,6 @@ portuxn(Uxn *u, Uint8 id, char *name, void (*talkfn)(Device *d, Uint8 b0, Uint8
 	d->u = u;
 	d->mem = u->ram.dat;
 	d->talk = talkfn;
-	printf("Device added #%02x: %s, at 0x%04x \n", id, name, d->addr);
+	fprintf(stderr, "Device added #%02x: %s, at 0x%04x \n", id, name, d->addr);
 	return d;
 }
diff --git a/src/uxnemu.c b/src/uxnemu.c
index cf0c23e..5543efe 100644
--- a/src/uxnemu.c
+++ b/src/uxnemu.c
@@ -1,5 +1,6 @@
 #include <SDL.h>
 #include <stdio.h>
+#include <unistd.h>
 #include <time.h>
 #include "uxn.h"
 #include "devices/ppu.h"
@@ -231,10 +232,10 @@ console_talk(Device *d, Uint8 b0, Uint8 w)
 {
 	if(!w) return;
 	switch(b0) {
-	case 0x8: printf("%c", d->dat[0x8]); break;
-	case 0x9: printf("0x%02x", d->dat[0x9]); break;
-	case 0xb: printf("0x%04x", mempeek16(d->dat, 0xa)); break;
-	case 0xd: printf("%s", &d->mem[mempeek16(d->dat, 0xc)]); break;
+	case 0x8: write(1, &d->dat[0x8], 1); break;
+	case 0x9: fprintf(stdout, "0x%02x", d->dat[0x9]); break;
+	case 0xb: fprintf(stdout, "0x%04x", mempeek16(d->dat, 0xa)); break;
+	case 0xd: fprintf(stdout, "%s", &d->mem[mempeek16(d->dat, 0xc)]); break;
 	}
 	fflush(stdout);
 }