diff --git a/hdr/portab.h b/hdr/portab.h
index b1764c8..188bf09 100644
--- a/hdr/portab.h
+++ b/hdr/portab.h
@@ -145,7 +145,8 @@ unsigned short getSS(void);
 
 #ifdef __FAR
 #define I86
-#define __int__(intno) asm volatile("int " ## #intno)
+#define STRINGIFY(x) #x
+#define __int__(intno) asm volatile(STRINGIFY(int $##intno))
 static inline void disable(void)
 {
   asm volatile("cli");
diff --git a/kernel/prf.c b/kernel/prf.c
index edff14c..3bfddb9 100644
--- a/kernel/prf.c
+++ b/kernel/prf.c
@@ -73,6 +73,12 @@ void put_console(int c)
     _DX = FP_OFF(buff);
     _AX = 0x13;
     __int__(0xe6);
+#elif defined(__GNUC__)
+    asm volatile(
+      "int $0xe6\n"
+      : /* outputs */
+      : /* inputs */ "a"(0x13), "e"(FP_SEG(buff)), "d"(FP_OFF(buff))
+    );
 #elif defined(I86)
     asm
       {
@@ -158,7 +164,8 @@ STATIC VOID handle_char(COUNT c)
 STATIC void ltob(LONG n, BYTE SSFAR * s, COUNT base)
 {
   ULONG u;
-  BYTE SSFAR *p, SSFAR *q;
+  BYTE SSFAR *p;
+  BYTE SSFAR *q;
   int c;
 
   u = n;