diff --git a/src/sdl/i_system.cpp b/src/sdl/i_system.cpp
index ba126bf54..03cbd74bf 100644
--- a/src/sdl/i_system.cpp
+++ b/src/sdl/i_system.cpp
@@ -422,7 +422,27 @@ void I_SetIWADInfo ()
 
 void I_PrintStr (const char *cp)
 {
-	fputs (cp, stdout);
+	// Strip out any color escape sequences before writing to the log file
+	char * copy = new char[strlen(cp)+1];
+	const char * srcp = cp;
+	char * dstp = copy;
+
+	while (*srcp != 0)
+	{
+		if (*srcp!=0x1c && *srcp!=0x1d && *srcp!=0x1e && *srcp!=0x1f)
+		{
+			*dstp++=*srcp++;
+		}
+		else
+		{
+			if (srcp[1]!=0) srcp+=2;
+			else break;
+		}
+	}
+	*dstp=0;
+
+	fputs (copy, stdout);
+	delete [] copy;
 	fflush (stdout);
 }