diff --git a/include/idt.h b/include/idt.h
index 671d5f0..90ab51a 100644
--- a/include/idt.h
+++ b/include/idt.h
@@ -17,6 +17,7 @@ typedef struct IDTR_s {
 
 extern IDTR_t idtr;
 extern InterruptDescriptor_t* idt_start;
+extern char num_interrupts;
 
 void setup_idt();
 void write_descriptors();
diff --git a/src/allocidt.s b/src/allocidt.s
index 18f6f6b..263a1aa 100644
--- a/src/allocidt.s
+++ b/src/allocidt.s
@@ -1,13 +1,15 @@
-global idtr, idt_start
+%define NUM_INTERRUPTS 32
+global idtr, idt_start, num_interrupts
 section .idtr
+    num_interrupts:
+        db NUM_INTERRUPTS
     idtr:
         ;Normally, the size would be the size of the whole table, but i'm only defining 32 interrupts for now.
         ;dw idt_end - idt_start
-        dw 32
+        dw NUM_INTERRUPTS * 8
         dd idt_start
-
 section .idt nobits
     idt_start:
-        resb 256 * 8 ;idt technically has 256 entries by the spec, so i'm reserving that much space... even if i dont implement that many. 
+        resb NUM_INTERRUPTS * 8 
     idt_end:
 
diff --git a/src/idt.c b/src/idt.c
index 1daa346..b353ff2 100644
--- a/src/idt.c
+++ b/src/idt.c
@@ -8,10 +8,9 @@ void setup_idt() {
 
 void write_descriptors() {
     
-    for(int i = 0; i < idtr.size; i+=(sizeof(InterruptDescriptor_t))) {
-             
+    for(int i = 0; i < num_interrupts; i++) {
+        
     }
-    return;
 }
 
 void load_idt() {