diff --git a/graph/DelayNormal1.cc b/graph/DelayNormal1.cc
index 344a3c1f..1042bbdb 100644
--- a/graph/DelayNormal1.cc
+++ b/graph/DelayNormal1.cc
@@ -14,6 +14,9 @@
 // You should have received a copy of the GNU General Public License
 // along with this program.  If not, see <https://www.gnu.org/licenses/>.
 
+// SSTA compilation.
+#if (SSTA == 1)
+
 #include "Delay.hh"
 
 #include <cmath> // sqrt
@@ -27,9 +30,6 @@
 // temporary hack
 #include "Sta.hh"
 
-// SSTA compilation.
-#if (SSTA == 1)
-
 namespace sta {
 
 inline float
diff --git a/graph/DelayNormal2.cc b/graph/DelayNormal2.cc
index 8b6f02ba..9ab1432a 100644
--- a/graph/DelayNormal2.cc
+++ b/graph/DelayNormal2.cc
@@ -14,6 +14,9 @@
 // You should have received a copy of the GNU General Public License
 // along with this program.  If not, see <https://www.gnu.org/licenses/>.
 
+// SSTA compilation.
+#if (SSTA == 2)
+
 #include "Delay.hh"
 
 #include <cmath> // sqrt
@@ -25,9 +28,6 @@
 #include "Units.hh"
 #include "StaState.hh"
 
-// SSTA compilation.
-#if (SSTA == 2)
-
 namespace sta {
 
 inline float
diff --git a/include/sta/Delay.hh b/include/sta/Delay.hh
index 06ca2929..5b68ae8c 100644
--- a/include/sta/Delay.hh
+++ b/include/sta/Delay.hh
@@ -14,10 +14,10 @@
 // You should have received a copy of the GNU General Public License
 // along with this program.  If not, see <https://www.gnu.org/licenses/>.
 
-#include "StaConfig.hh"
-
 #pragma once
 
+#include "StaConfig.hh"
+
 #if (SSTA == 1)
   // Delays are Normal PDFs.
   #include "DelayNormal1.hh"