diff --git a/ch01-essential-features/ExtremeC_examples_chapter1_7.c b/ch01-essential-features/ExtremeC_examples_chapter1_7.c
index 47afcc4..06e2f79 100644
--- a/ch01-essential-features/ExtremeC_examples_chapter1_7.c
+++ b/ch01-essential-features/ExtremeC_examples_chapter1_7.c
@@ -1,7 +1,7 @@
 // File name: ExtremeC_exampels_chapter1_7.c
 // Description: Example 1.7
 
-#define CONDITION1
+#define CONDITION
 
 int main(int argc, char** argv) {
 #ifdef CONDITION