diff --git a/apps/calculation/calculation.cpp b/apps/calculation/calculation.cpp
index 25574677b..7274e349d 100644
--- a/apps/calculation/calculation.cpp
+++ b/apps/calculation/calculation.cpp
@@ -71,7 +71,7 @@ Expression * Calculation::input() {
 
 ExpressionLayout * Calculation::inputLayout() {
   if (m_inputLayout == nullptr && input() != nullptr) {
-    m_inputLayout = input()->createLayout(Expression::FloatDisplayMode::Decimal, Expression::ComplexFormat::Algebric);
+    m_inputLayout = input()->createLayout(Expression::FloatDisplayMode::Decimal, Expression::ComplexFormat::Cartesian);
   }
   return m_inputLayout;
 }
diff --git a/apps/settings/main_controller.cpp b/apps/settings/main_controller.cpp
index c810fe8b1..4af62e86b 100644
--- a/apps/settings/main_controller.cpp
+++ b/apps/settings/main_controller.cpp
@@ -150,7 +150,7 @@ void MainController::willDisplayCellForIndex(HighlightCell * cell, int index) {
       delete m_complexFormatLayout;
       m_complexFormatLayout = nullptr;
     }
-    if (Preferences::sharedPreferences()->complexFormat() == Expression::ComplexFormat::Algebric) {
+    if (Preferences::sharedPreferences()->complexFormat() == Expression::ComplexFormat::Cartesian) {
       const char text[6] = {'a','+', Ion::Charset::IComplex, 'b', ' ', 0};
       m_complexFormatLayout = new StringLayout(text, 6, KDText::FontSize::Small);
     } else {
diff --git a/poincare/include/poincare/expression.h b/poincare/include/poincare/expression.h
index a078507b4..40c932f27 100644
--- a/poincare/include/poincare/expression.h
+++ b/poincare/include/poincare/expression.h
@@ -79,7 +79,7 @@ public:
     Default = 2
   };
   enum class ComplexFormat {
-    Algebric = 0,
+    Cartesian = 0,
     Polar = 1,
     Default = 2
   };
diff --git a/poincare/src/complex.cpp b/poincare/src/complex.cpp
index e541e3b52..2ae4d0aff 100644
--- a/poincare/src/complex.cpp
+++ b/poincare/src/complex.cpp
@@ -392,7 +392,7 @@ ExpressionLayout * Complex::createPolarLayout(FloatDisplayMode floatDisplayMode)
 
 ExpressionLayout * Complex::createCartesianLayout(FloatDisplayMode floatDisplayMode) const {
   char buffer[k_maxComplexBufferLength];
-  int numberOfChars = convertComplexToText(buffer, k_maxComplexBufferLength, floatDisplayMode, ComplexFormat::Algebric);
+  int numberOfChars = convertComplexToText(buffer, k_maxComplexBufferLength, floatDisplayMode, ComplexFormat::Cartesian);
   return new StringLayout(buffer, numberOfChars);
 }
 
diff --git a/poincare/src/preferences.cpp b/poincare/src/preferences.cpp
index 312afa20b..f23ad1cdf 100644
--- a/poincare/src/preferences.cpp
+++ b/poincare/src/preferences.cpp
@@ -7,7 +7,7 @@ static Preferences s_preferences;
 Preferences::Preferences() :
   m_angleUnit(Expression::AngleUnit::Degree),
   m_displayMode(Expression::FloatDisplayMode::Decimal),
-  m_complexFormat(Expression::ComplexFormat::Algebric)
+  m_complexFormat(Expression::ComplexFormat::Cartesian)
 {
 }
 
diff --git a/poincare/test/complex.cpp b/poincare/test/complex.cpp
index b382294a8..fbaae4b38 100644
--- a/poincare/test/complex.cpp
+++ b/poincare/test/complex.cpp
@@ -8,10 +8,10 @@
 using namespace Poincare;
 constexpr Expression::FloatDisplayMode Decimal = Expression::FloatDisplayMode::Decimal;
 constexpr Expression::FloatDisplayMode Scientific = Expression::FloatDisplayMode::Scientific;
-constexpr Expression::ComplexFormat Algebric = Expression::ComplexFormat::Algebric;
+constexpr Expression::ComplexFormat Cartesian = Expression::ComplexFormat::Cartesian;
 constexpr Expression::ComplexFormat Polar = Expression::ComplexFormat::Polar;
 
-void assert_cartesian_complex_converts_to(float a, float b, const char * result, Expression::FloatDisplayMode mode = Scientific, Expression::ComplexFormat format = Algebric, int significantDigits = 7, int bufferSize = 13+13+7+1) {
+void assert_cartesian_complex_converts_to(float a, float b, const char * result, Expression::FloatDisplayMode mode = Scientific, Expression::ComplexFormat format = Cartesian, int significantDigits = 7, int bufferSize = 13+13+7+1) {
   int tagSize = 8;
   unsigned char tag = 'X';
   char * taggedBuffer = (char *)malloc(bufferSize+2*tagSize);
@@ -76,17 +76,17 @@ QUIZ_CASE(poincare_complex_to_text) {
    * give the exact right number because of float represention. The closest
    * exact representation is -9.090897E-33. */
   assert_cartesian_complex_converts_to(-0.00000000000000000000000000000000909090964f, 0.0f, "-9.090897E-33");
-  assert_cartesian_complex_converts_to(123.421f, 0.0f, "123.4", Decimal, Algebric, 4, 6);
-  assert_cartesian_complex_converts_to(123.421f, 0.0f, "1.2E2", Decimal, Algebric, 5, 6);
+  assert_cartesian_complex_converts_to(123.421f, 0.0f, "123.4", Decimal, Cartesian, 4, 6);
+  assert_cartesian_complex_converts_to(123.421f, 0.0f, "1.2E2", Decimal, Cartesian, 5, 6);
 }
 
 QUIZ_CASE(poincare_complex_cartesian_to_text) {
-  assert_cartesian_complex_converts_to(1.0f, 2.0f, "1+2*i", Decimal, Algebric);
+  assert_cartesian_complex_converts_to(1.0f, 2.0f, "1+2*i", Decimal, Cartesian);
   assert_cartesian_complex_converts_to(1.0f, 2.0f, "2.236068*e^(1.107149*i)", Decimal, Polar);
-  assert_cartesian_complex_converts_to(-1.3f, 2.444f, "-1.3+2.444*i", Decimal, Algebric);
+  assert_cartesian_complex_converts_to(-1.3f, 2.444f, "-1.3+2.444*i", Decimal, Cartesian);
   assert_cartesian_complex_converts_to(-1.3f, 2.444f, "2.768237*e^(2.059649*i)", Decimal, Polar);
-  assert_cartesian_complex_converts_to(-1.3f, -2.444f, "-1.3-2.444*i", Decimal, Algebric);
-  assert_cartesian_complex_converts_to(64078208.0f, 119229408.0f, "6.407821E7+1.192294E8*i", Decimal, Algebric);
+  assert_cartesian_complex_converts_to(-1.3f, -2.444f, "-1.3-2.444*i", Decimal, Cartesian);
+  assert_cartesian_complex_converts_to(64078208.0f, 119229408.0f, "6.407821E7+1.192294E8*i", Decimal, Cartesian);
   assert_cartesian_complex_converts_to(64078208.0f, 119229408.0f, "1.353576E8*e^(1.07765*i)", Decimal, Polar);
 }