diff --git a/src/calculus/derivation.h b/src/calculus/deriv.h
similarity index 99%
rename from src/calculus/derivation.h
rename to src/calculus/deriv.h
index c123f241..4f45bfa4 100644
--- a/src/calculus/derivation.h
+++ b/src/calculus/deriv.h
@@ -1,6 +1,6 @@
 
 ///
-/// @file derivation.h Derivative approximation
+/// @file deriv.h Derivative approximation
 ///
 
 #ifndef DERIVATION_THEORETICA_H
diff --git a/src/calculus/integration.h b/src/calculus/integral.h
similarity index 99%
rename from src/calculus/integration.h
rename to src/calculus/integral.h
index 8bd13c22..247c13df 100644
--- a/src/calculus/integration.h
+++ b/src/calculus/integral.h
@@ -1,6 +1,6 @@
 
 ///
-/// @file integration.h Integral approximation
+/// @file integral.h Integral approximation
 ///
 
 #ifndef THEORETICA_INTEGRATION_H
diff --git a/src/optimization/roots.h b/src/optimization/roots.h
index b649e63f..39835863 100644
--- a/src/optimization/roots.h
+++ b/src/optimization/roots.h
@@ -7,7 +7,7 @@
 #define THEORETICA_ROOTS_H
 
 #include "../core/function.h"
-#include "../calculus/derivation.h"
+#include "../calculus/deriv.h"
 #include "../autodiff/dual.h"
 #include "../autodiff/dual2.h"
 #include "../algebra/vec.h"
diff --git a/src/statistics/statistics.h b/src/statistics/statistics.h
index e6671c06..2c2a88c2 100644
--- a/src/statistics/statistics.h
+++ b/src/statistics/statistics.h
@@ -9,7 +9,7 @@
 #include "../core/constants.h"
 #include "../core/real_analysis.h"
 #include "../core/special.h"
-#include "../calculus/integration.h"
+#include "../calculus/integral.h"
 #include "../calculus/gauss.h"
 #include "../core/dataset.h"
 
diff --git a/src/theoretica.h b/src/theoretica.h
index c716f42f..d84f1a34 100644
--- a/src/theoretica.h
+++ b/src/theoretica.h
@@ -70,8 +70,8 @@
 #include "complex/complex_types.h"
 
 // Derivative and integral approximation
-#include "calculus/derivation.h"
-#include "calculus/integration.h"
+#include "calculus/deriv.h"
+#include "calculus/integral.h"
 #include "calculus/ode.h"
 #include "calculus/taylor.h"
 
diff --git a/test/prec/test_calculus.cpp b/test/prec/test_calculus.cpp
index 7970884c..e1e0b8ce 100644
--- a/test/prec/test_calculus.cpp
+++ b/test/prec/test_calculus.cpp
@@ -123,7 +123,7 @@ int main(int argc, char const *argv[]) {
 		};
 
 
-		// derivation.h
+		// deriv.h
 		// Compare the numerical derivative to the analytical derivative
 
 
@@ -188,7 +188,7 @@ int main(int argc, char const *argv[]) {
 	}
 
 
-		// integration.h
+		// integral.h
 		// Compare integral quadrature to primitives