diff --git a/poincare/src/matrix_data.cpp b/poincare/src/matrix_data.cpp
index 49a89c001..e5506a431 100644
--- a/poincare/src/matrix_data.cpp
+++ b/poincare/src/matrix_data.cpp
@@ -3,7 +3,6 @@ extern "C" {
 #include <stdlib.h>
 }
 #include <poincare/matrix_data.h>
-#include <poincare/integer.h>
 
 namespace Poincare {
 
diff --git a/poincare/src/power.cpp b/poincare/src/power.cpp
index 971bcef12..f94c6796d 100644
--- a/poincare/src/power.cpp
+++ b/poincare/src/power.cpp
@@ -52,7 +52,7 @@ Expression * Power::evaluateOnComplex(Complex * c, Complex * d, Context& context
 }
 
 Expression * Power::evaluateOnMatrixAndComplex(Matrix * m, Complex * c, Context& context, AngleUnit angleUnit) const {
-  if (m_operands[1]->type() != Expression::Type::Integer) {
+  if (isnan(m_operands[1]->approximate(context, angleUnit)) || m_operands[1]->approximate(context, angleUnit) != (int)m_operands[1]->approximate(context, angleUnit)) {
     return new Complex(Complex::Float(NAN));
   }
  if (m->numberOfColumns() != m->numberOfRows()) {