diff --git a/src/PowerPC_EABI_Support/MSL/MSL_C/MSL_Common_Embedded/Math/Double_precision/e_atan2.c b/src/PowerPC_EABI_Support/MSL/MSL_C/MSL_Common_Embedded/Math/Double_precision/e_atan2.c
index 5a7863be0..81d812560 100644
--- a/src/PowerPC_EABI_Support/MSL/MSL_C/MSL_Common_Embedded/Math/Double_precision/e_atan2.c
+++ b/src/PowerPC_EABI_Support/MSL/MSL_C/MSL_Common_Embedded/Math/Double_precision/e_atan2.c
@@ -40,6 +40,7 @@
  */
 
 #include "fdlibm.h"
+#include "math.h"
 
 #ifdef __STDC__
 static const double
@@ -140,4 +141,4 @@ double __ieee754_atan2(y, x) double y, x;
 	default:                     /* case 3 */
 		return (z - pi_lo) - pi; /* atan(-,-) */
 	}
-}
\ No newline at end of file
+}
diff --git a/src/PowerPC_EABI_Support/MSL/MSL_C/MSL_Common_Embedded/Math/Double_precision/s_atan.c b/src/PowerPC_EABI_Support/MSL/MSL_C/MSL_Common_Embedded/Math/Double_precision/s_atan.c
index 0f88ef2fc..e771307b9 100644
--- a/src/PowerPC_EABI_Support/MSL/MSL_C/MSL_Common_Embedded/Math/Double_precision/s_atan.c
+++ b/src/PowerPC_EABI_Support/MSL/MSL_C/MSL_Common_Embedded/Math/Double_precision/s_atan.c
@@ -33,6 +33,7 @@
  */
 
 #include "fdlibm.h"
+#include "math.h"
 
 #ifdef __STDC__
 static const double atanhi[] = {
@@ -140,4 +141,4 @@ double atan(x) double x;
 		z = atanhi[id] - ((x * (s1 + s2) - atanlo[id]) - x);
 		return (hx < 0) ? -z : z;
 	}
-}
\ No newline at end of file
+}