diff --git a/corelib/src/libs/SireIO/biosimspace.cpp b/corelib/src/libs/SireIO/biosimspace.cpp
index fa293afac..9f7dcbb18 100644
--- a/corelib/src/libs/SireIO/biosimspace.cpp
+++ b/corelib/src/libs/SireIO/biosimspace.cpp
@@ -466,7 +466,7 @@ namespace SireIO
             }
 
             // OPC
-            if (model == "OPC")
+            else if (model == "OPC")
             {
                 double a = 0.1477224;
 
@@ -592,7 +592,7 @@ namespace SireIO
             }
 
             // OPC
-            if (model == "OPC")
+            else if (model == "OPC")
             {
                 double a = 0.1477224;
 
diff --git a/corelib/src/libs/SireMaths/complex.cpp b/corelib/src/libs/SireMaths/complex.cpp
index ac24dbdfa..9701a81b4 100644
--- a/corelib/src/libs/SireMaths/complex.cpp
+++ b/corelib/src/libs/SireMaths/complex.cpp
@@ -396,7 +396,7 @@ namespace SireMaths
     /** Subtraction */
     Complex operator-(double x, const Complex &z)
     {
-        return z - x;
+        return Complex(x) - z;
     }
 
     /** Multiplication */