diff --git a/main.c b/main.c
index 18626ca..3cf7de5 100644
--- a/main.c
+++ b/main.c
@@ -41,6 +41,8 @@ struct {
     bool ternary;
 } use_operators;
 
+bool print_truthtable = false;
+
 bool assume_yes = false;
 
 bool verbose = false;
@@ -59,8 +61,12 @@ static void parse_args(int argc, char* const* argv)
 
     print_with_color = isatty(1);
 
-    for (int opt; (opt = getopt(argc, argv, "pyqmvc:eEo:C:B")) != -1; ) switch (opt)
+    for (int opt; (opt = getopt(argc, argv, "tpyqmvc:eEo:C:B")) != -1; ) switch (opt)
     {
+        case 't':
+            print_truthtable = true;
+            break;
+
         case 'p':
             print_all_and_quit = true;
             break;
@@ -1514,7 +1520,10 @@ int main(int argc, char* const* argv)
     {
         uint16_t truthtable = evaluate(command);
 
-        // printf("truthtable = 0b%016b\n", truthtable);
+        if (print_truthtable)
+        {
+            printf("truthtable: 0b%016b\n", truthtable);
+        }
 
         if (lookup[truthtable].kind == ek_unreachable)
         {
@@ -1544,7 +1553,10 @@ int main(int argc, char* const* argv)
 
             uint16_t truthtable = evaluate(line);
 
-            // printf("truthtable = 0b%016b\n", truthtable);
+            if (print_truthtable)
+            {
+                printf("truthtable: 0b%016b\n", truthtable);
+            }
 
             if (lookup[truthtable].kind == ek_unreachable)
             {