diff --git a/ivlpp/lexor.lex b/ivlpp/lexor.lex
index d862f4236..70cfd7b2a 100644
--- a/ivlpp/lexor.lex
+++ b/ivlpp/lexor.lex
@@ -50,7 +50,7 @@ static void  do_expand(int use_args);
 static const char* do_magic(const char*name);
 static const char* macro_name(void);
 
-static void include_filename(void);
+static void include_filename(int macro_str);
 static void do_include(void);
 
 static int load_next_input(void);
@@ -290,7 +290,8 @@ keywords (include|define|undef|ifdef|ifndef|else|elsif|endif)
     if (macro_needs_args(yytext+1)) yy_push_state(MA_START); else do_expand(0);
 }
 
-<PPINCLUDE>\"[^\"]*\" { include_filename(); }
+<PPINCLUDE>\"[^\"]*\"   { include_filename(0); }  /* A normal (") string */
+<PPINCLUDE>`\"[^\"]*`\" { include_filename(1); }  /* A macro (`") string */
 
 <PPINCLUDE>[ \t\b\f] { ; }
 
@@ -1706,7 +1707,7 @@ static void output_init(void)
     }
 }
 
-static void include_filename(void)
+static void include_filename(int macro_str)
 {
     if(standby) {
         emit_pathline(istack);
@@ -1717,8 +1718,8 @@ static void include_filename(void)
     }
 
     standby = malloc(sizeof(struct include_stack_t));
-    standby->path = strdup(yytext+1);
-    standby->path[strlen(standby->path)-1] = 0;
+    standby->path = strdup(yytext+1+macro_str);
+    standby->path[strlen(standby->path)-1-macro_str] = 0;
     standby->lineno = 0;
     standby->comment = NULL;
 }